Stoyan Gadjev

Stoyan Dimitrov Gadjev or alternative spelling Gadzhev (December 29, 1940 - August 19, 2017) was a Bulgarian veterinarian, scientist and university lecturer in veterinary anatomy.
== Early life and education ==
Assoc. prof. Stoyan Gadjev (Gadzhev), PhD was born in the village of Krushevo, Blagoevgrad Province, Nevrokop region on December 29, 1940. He attended II mixed-sex high school in the town of Gotse Delchev, Blagoevgrad Province. He completed the two year compulsory military service as a topographer near the town of Vratsa. In 1965 he received his degree in veterinary medicine from the prof. dr. G. Pavlov Higher Veterinary Medical Institute in the city of Sofia.
== Career ==
Assoc. prof. Stoyan Gadjev (Gadzhev), PhD had 42 years of experience as a renowned veterinarian and lecturer of veterinary anatomy. He worked five years as the chief veterinarian of the Labor Cooperative Agricultural Farm in the village of Tatari, Belene municipality, Pleven district and later on in the Varietal Seeds State enterprise, village of Sarnitza, Pazardzhik district. He also worked as the Head of State Veterinary Sanitary Control in Batak, Bulgaria until 1974.
He was elected to the position of an assistant professor in the Department of Animal Anatomy at the Faculty of Veterinary Medicine (FVM) of the newly established Higher Institute of Zootechnics and Veterinary Medicine (VIZVM) in the city of Stara Zagora after successfully passing a competitive examination in 1974. He became a senior assistant professor in 1977 and chief assistant professor in the same department in 1979.
He successfully defended his dissertation on Morphological investigations on arterial and venous blood vessels and their formations in the head and brain of sheep in 1986 and obtained the degree of Candidate of Veterinary Sciences in 1986 as well as the scientific title of Associate Professor in 1988.
In 1995 the Trakia University in the city of Stara Zagora was established and he was a member of the Scientific Council at the Faculty of Veterinary Medicine from 1995 till 1999. He was the head of the Department of Veterinary Anatomy, Histology and Embryology from 1997 till 2000 and for several months until 2004. He retired in 2005.
He became a member of the Bulgarian Agrarian Union in 1970. In 1998 the Commission set up by the Access to the Documents of the Former States Security Services Act certified that the former State Security Services had not collected data on him.
In 2015 he was awarded the Golden Diploma by the management of the Veterinary Faculty of Trakia University which is awarded to “distinguished veterinarians who graduated 50 years ago and have significantly contributed to the development and prosperity of the veterinary profession”.
Assoc. prof. Stoyan Gadjev (Gadzhev), PhD died in the town of Velingrad on August, 19, 2017.
== Scientific achievements ==
Assoc. prof. Stoyan Gadjev (Gadzhev), PhD published 4 scientific books and 1 popular science book about Donkey as a single author, more than 51 scientific (most of the articles have summaries in English and Russian) and 41 popular science articles in Bulgarian and international journals and newspapers, etc.
His self-published scientific books on Applied and Topographic Anatomy of Domestic Animals and Birds, Systemic Anatomy of Domestic Animals (Volumes I and II) and Anatomy of Domestic Birds are the only books of veterinary anatomy for universities in Bulgaria for many years at the international level, with bibliography, modern veterinary anatomical nomenclature and emphasis being placed on the applied nature of the anatomical data.
He is the single author of the popular science book All about the Donkey, published in 1997. It is the only popular science book about Donkey in Bulgaria.
He was also the co-author of Diseases of the cat (1999) and two handbooks for exercises in Systemic (1992) and Topographic (1993) anatomy of domestic animals.
The title of his dissertation for obtaining the degree of candidate of veterinary medicine at the Higher Institute of Zootechnics and Veterinary Medicine (VIZVM), Stara Zagora, Sofia was Morphological investigations on arterial and venous blood vessels and their formations in the head and brain of sheep. Arteries and their formations in the head and brain of newborn, adolescent and adult sheep were thoroughly studied. For the first time, some previously undescribed arteries and veins, venous networks and plexuses in the masticatory muscles, pharynx, orbit, nasal and oral cavity had been identified. The course and obliteration of the internal carotid artery were monitored. Some peculiarities in the structure of the occipital-vertebral anastomosis, the sinus system and the arteries and veins of the brain had been established. Studies had also been performed on the histostructure of large vessels and vascular plexuses and the arterial networks.
In addition to addressing various problems in the field of blood supply to various organs in different species of domestic animals, his scientific works paid attention to other systems in the body. He also developed methods for the preparation of dry anatomical preparations from various organs to illustrate the learning process and a method for taking blood from poultry.
His books and scientific articles are cited in Bulgarian and international scientific papers and referenced in international databases with scientific information such as Scopus, MEDLINE / PubMed, Google Scholar, FAO AGRIS, CAB Direct, etc. long before this system for monitoring and evaluation of research was introduced in Bulgaria.
He was a member of the Bulgarian Anatomical Society and the German Anatomischen Gesellschaft from 1981 till 1995. He maintained scientific contacts with prominent scientists from Western European countries although he was never allowed to travel abroad. He participated with scientific reports in a number of congresses, symposia, scientific sessions, incl. with international participation – Varna (1978, 1992), Golden Sands (1981), Pleven (1985, 1999), Sofia (1985), Albena (1987), Plovdiv (1987), Kostinbrod (1988), Stara Zagora (1982, 1989, 1990, 1991, 1996), etc.
== Scientific Publications ==
=== Single-author Scientific Books ===
* Gadjev, S. (1995). Prilozhna i topografska anatomia na domashnite zhivotni i ptitsi [Applied and topographic anatomy of domestic animals and birds]. 1st ed., Stara Zagora, self-pub, 70 figs, pp. 360, (BG).
* Gadjev, S. (1997). Anatomia na domashnite ptitsi [Anatomy of domestic birds]. 1st ed., Stara Zagora, self-pub, 43 figs, pp. 148, (BG). 
* Gadjev, S. (1999). Anatomia na domashnite zhivotni [Anatomy of domestic animals], vol. II, Stara Stara Zagora, self-pub, 113 figs, pp. 396, (BG). 
* Gadjev, S. (2000). Anatomia na domashnite zhivotni [Anatomy of domestic animals], vol I, 1st ed., Stara Zagora, self-pub, 249 figs, pp. 512, (BG).
* Gadjev, S. (2014). Prilozhna i topografska anatomia na domashnite zhivotni i ptitsi [Applied and topographic anatomy of domestic animals and birds]. 2nd rev. & exp. ed. Stara Zagora, self-pub, 194 figs, pp. 500, ISBN 978-954-487-126-0, (BG).
* Gadjev, S. (2016). Anatomia na domashnite zhivotni [Anatomy of domestic animals], vol I, 2nd ed., Stara Zagora, self-pub, 249 figs, pp. 512, (BG). 
* Gadjev, S. (2019). Anatomia na domashnite ptisi [Anatomy of domestic birds]. 2nd rev. exp. ed., Stara Zagora: Maya Stoyanova Gadzheva, 46 figs., pp. 194, (BG). 
=== Single-author Popular Science Book ===
* Gadjev, S. (1997). Vsichko za magareto [All about the donkey]. Stara Zagora, self-pub, 9 figs., pp. 96, (BG).
=== Handbooks for exercises and other books ===
* Gadev, Chr., Kovachev, G., Gadjev, S. & Georgiev, G. (1992). Rakovodstvo za uprazhnenia po sistematichna anatomia na domashnite zhivotni [Handbook for exercises of topographic anatomy of domestic animals]. Sofia: Zemya, pp. 196, (BG). 
* Gadev, Chr., Kovachev, G., Gadjev, S. & Georgiev, G. (1993). Rakovodstvo za uprazhnenia po topografska anatomia na domashnite zhivotni [Handbook for exercises of topographic anatomy of domestic animals]. Sofia: Zemizdat, pp. 120, (BG). 
* Georgieva, D., Nikolov, I., Borissov, I., Gadjev, S., Deyanov, M., Tsachev, I., Parvanov, P., Vassilev, H., Ivanov, A., Kochankov, D., Sivrev, D. & Dinev, I. (1999). Bolesti na kotkata [Diseases of the cat]. Stara Zagora: Aria, pp. 424,(BG). 
=== Scientific Articles ===
* Gadev, Chr. & Gadjev, S. (1979). Variatsii na stavnite fasetki na kalkaneusa u konya [Variations of the joint facets of calcaneus in horse]. Nauchni trudove, Vish institut po zootehnika i veterinarna meditsina, Veterinarnomedistinski fakultet, Stara Zagora, Zemizdat / Scientific Works, Higher Institute of Zootechnics and Veterinary Medicine, Faculty of Veterinary Medicine, Stara Zagora, Zemizdat, ХХVI, I, 43-48, (BG). 
* Gadjev, S. (1979). Varhu nutritivnite sadove na belite drobove u konya [On the nutritive vessels of the lungs in a horse]. Nauchni trudove, Vish institut po zootehnika i veterinarna meditsina, Veterinarnomedistinski fakultet, Stara Zagora, Zemizdat / Scientific Works, Higher Institute of Zootechnics and Veterinary Medicine, Faculty of Veterinary Medicine, Stara Zagora, Zemizdat, ХХVI, I, 99-106, (BG).
* Gadjev, Chr. & Gadjev, S. (1980). Sluchai na vrodena anomalia na glavnia mozak pri tele [A case of innate anomaly of the main brain of a calf]. Veterinarnomeditsinski nauki / Veterinary Science, XVII, 8, 19-24, (BG). 
* Gadjev, S. (1980). Varhu nalichieto na sinus conchonasalis pri govedoto [On the presence of sinus conchonasalis with cattle]. Veterinarnomeditsinski nauki / Veterinary Science, XVII, 4, 38-41, (BG). 
* Gadjev, S. & Mompié, J. (1980). Preparation of dry lungs – whole and parts for use in veterinary medicine exercises. In: II Conf. Metodologia universidat de Camaguey, (EN). 
* Ivanov, P., Drinkov, V., Georgiev, D. & Gadjev, S. (1980). Likvidirane na zarazen epidimit v elitno stado [Eradication of contagious epididymitis in an elite herd]. Veterinarna sbirka / Veterinary assembly, LXXVII, 11, 22-24, 27, (BG). 
* Gadjev, S. & Gadev, Chr. (1982). Izsledvania varhu venoznite mrezhi i splitove v davkatelnite muskuli [Investigations into venous networks and plexuses in the chewing muscles]. Veterinarnomeditsinski nauki / Veterinary Science, XIX, 6, 49-56, (BG). 
* Gadjev, S. (1982). Anatomichno i histologichno izsledvane na vatreshnata sanna arteria pri ovtsata [Anatomic and histologic study on the internal carotid artery of the sheep]. Veterinarnomeditsinski nauki / Veterinary Science, XIX, 7, 14-21, (BG).
* Gadjev, S. & Gadev, Chr. (1982). Anatomichni prouchvania varhu plexus ophthalmicus i plexus orbitalis pri ovtsata [Anatomic studies on plexus ophthalmicus and plexus orbitalis medialis in sheep]. Veterinarnomeditsinski nauki / Veterinary Science, XIX, 9, 27-33, (BG). 
* Gadjev, S. & Gadev, Chr. (1982). Venöse Plexus am Kopf des Hausschafes [Venous plexus in the head of domestic sheep]. Verh. Anat. Ges., 76, S. 297-928, (DE). 
* Gadjev, S. (1982). Anatomische und histologische Untersuchungen an der A. carotis interna beim Schaf (Ovis aries L.) [Anatomical and histological studies on the A. carotis interna of sheep (Ovis aries L.)]. Verh. Anat. Ges., 76, S. 299-300, (DE). 
* Gadjev, S. & Georgiev, G. (1983). Varhu nyakoi anatomo-topografski osobenosti na Lnn. Mammarii pri balgarskoto kafiavo govedo [On certain anatomotopographic characteristics of Lnn. mammarii in the Bulgarian Brown Cattle]. Nauchni trudove, Vish institut po zootehnika i veterinarna meditsina, Veterinarnomedistinski fakultet, Stara Zagora, Zemizdat / Scientific Works, Higher Institute of Zootechnics and Veterinary Medicine, Faculty of Veterinary Medicine, Stara Zagora, Zemizdat, XXVIII, I, 39-48, (BG). 
* Gadjev, S. (1983). Varhu ustroistvoto na Rete mirabile epidurale rostrale pri ovtsata [On the structure of Rete mirabile epidurale rostrale in sheep]. Nauchni trudove, Vish institut po zootehnika i veterinarna meditsina, Veterinarnomedistinski fakultet, Stara Zagora, Zemizdat / Scientific Works, Higher Institute of Zootechnics and Veterinary Medicine, Faculty of Veterinary Medicine, Zemizdat, XXVIII, I, 49-59, (BG). 
* Gadev, Chr., Georgiev, G. & Gadjev, S. (1983). Metodi za prigotviane na suhi anatomichni preparati [Methods of preparating dry anatomical preparations]. Izvestia na natsionalnia selskostopanski muzey / Notifications of the National Agricultural Museum, 5, 336-349, (BG). 
* Gadjev, S. (1983). Alveokokoza pri krava [A case of alveococcosis in a cow]. Veterinarna sbirka / Veterinary Assembly, LXXXI, 12, 25-26, (BG). 
* Gadjev, S. (1983). Anatomichni izsledvania varhu venoznite sadove v oblastta na sinus venosus i vena cava caudalis na chernia drob pri novorodeni teleta [Anatomical studies on the venous vessels in the region of sinus venosus and vena cava caudalis of the liver in newborn calves]. Veterinarnomeditsinski nauki / Veterinary Science, XX, 3-4, 68-72, (BG). 
* Kovachev, G., Gadjev, S. & Georgiev, G. (1983). Varhu kravosnabdiavaneto na kopitoto pri ovtsete [On blood supply of hoof in sheep]. Nauchni trudove, Vish institut po zootehnika i veterinarna meditsina, Veterinarnomedistinski fakultet, Stara Zagora, Zemizdat / Scientific Works, Higher Institute of Zootechnics and Veterinary Medicine, Faculty of Veterinary Medicine, Zemizdat, XXVIII, I, 61-71, (BG). 
* Ivanov, I. & Gadjev, S. (1984). Ratsionalen metod za vzemane na krav ot domashni ptisi [A rational method for drawing blood from domestic birds]. Veterinarna sbirka / Veterinary Assembly, I, 39-40, (BG).
* Binev, K., Gadjev, S. & Gadev Chr. (1984). Izsledvania varhu kravonosnite sadove v oblastta na opashkata pri domashnia bivol [Investigations of the blood vessels in the tail region of the domestic buffalo]. Veterinarnomeditsinski nauki / Veterinary Science, XXI, 5, 61-65, (BG). 
* Gigov, Tz., Gadev, Chr., Dinov, D., Kovachev, G., Gadjev, S., Georgiev, G. & Tomov, S. (1985). Morfologichni i topografski promeni na babretsite pri novorodeni i podrastvashti teleta do 6-mesechna vazrast [Morphological and topographical changes in the kidneys of new-born and up to six-months old growing up calves]. Nauchni trudove, Vish institut po zootehnika i veterinarna meditsina, Veterinarnomedistinski fakultet, Stara Zagora, Zemizdat / Scientific Works, Higher Institute of Zootechnics and Veterinary Medicine, Faculty of Veterinary Medicine, Zemizdat, XXX, I, 13-20, (BG). 
* Gigov, Tz., Dinov, D., Kovachev, G., Vitanov, S., Gadjev, S. & Georgiev, G. (1985). Morfologichni i topografski promeni na chervata pri novorodeni i podrastvashti teleta do shest mesechna vazrast [Morphological and topographical changes in the intestines of new-born and growing up calves up to six months of age]. Nauchni trudove, Vish institut po zootehnika i veterinarna meditsina, Veterinarnomedistinski fakultet, Stara Zagora, Zemizdat / Scientific Works, Higher Institute of Zootechnics and Veterinary Medicine, Faculty of Veterinary Medicine, XXX, I, 21-40, (BG). 
* Gigov, Tz., Vassilev, V., Georgiev, G., Gadev, Chr., Dinov, D., Kovachev, G., Gadjev, S. & Tomov. S. (1985). Morfologichni prouchvania na niakoi organi ot prednia otdel na hranosmilatelnata sistema pri novorodeni i podrastvashti teleta [Morphological studies of some organs of the fore-section of the digestive system of new-born and growing-up calves]. Nauchni trudove, Vish institut po zootehnika i veterinarna meditsina, Veterinarnomedistinski fakultet, Stara Zagora, Zemizdat / Scientific Works, Higher Institute of Zootechnics and Veterinary Medicine, Faculty of Veterinary Medicine, Zemizdat, XXX, I, 41-53, (BG). 
* Gadjev, S. & Gadev, Chr. (1985). Anatomical studies on the occipito-vertebral anastomosis in sheep. IX National Congress of Anatomy, Histology and Embryology with International Participation. Pleven, May, 25-28, (BG). 
* Gadjev, S. (1985). Anatomical studies on the sinuses of dura mater in sheep. IX National Congress of Anatomy, Histology and Embryology with International Participation. Pleven, May, 25-28, (BG). 
* Vodenicharov, A. & Gadjev, S. (1985). Anatomichni izsledvania varhu kravonosnite sadove na babreka pri ovtsata [Anatomical studies on the kidney blood vessels in the sheep]. In New Achievements of the Scientific and Technological Progress in Veterinary Medicine Conference Proceedings (274-285), Sofia, December, (BG). 
* Gadjev, S. (1985). Anatomichni izsledvania varhu venoznite splitove v oblastta na glatkata pri ovtsata [Anatomical studies of venous plexuses in the fauces area of a sheep]. Scientific Works, Higher Institute of Zootechnics and Veterinary Medicine, Zooengineering Faculty (32, 105-108), Stara Zagora, Proceedings of the II International Symposium on Digestion Physiology of Ruminants and Their Productivity, Stara Zagora, November, 1982, (BG). 
* del Toro, A., Gadjev, S. & Mompié, J. (1986). Método de conservación en seco de pulmones mediante el empleo de aire, Nota Tecnica [Dry preservation method of lungs by using air]. Revista de Producción Animal (Cuba), 2(1), 99-102, (ES). 
* Gadjev, C. (1986). Morfologichni izsledvania varhu arterialnite i venozni kravonosni sadove i tehnite obrazuvania v oblastta na glavata i glavnia mozak pri ovtsata [Morphological investigations on arterial and venous blood vessels and their formations in the head and brain of sheep]. Dissertation, Sofia, (BG). 
* Gadjev, C. & Katrandzhiev, D. (1987). Sravnitelni anatomichni izsledvania na zabite pri magareto [Comparative anatomical studies of donkey teeth]. XIV International Symposium for Students and Young Researchers “Youth and the Scientific and Technological Revolution”, VMEI “V. I. Lenin”, Plovdiv, November, 18-20, (BG).
* Gadjev, S, Katrandzhiev, D & Shinderov, T. (1987). Sravnitelni anatomo-topografski izsledvania na farinksa pri magareto [Comparative anatomo-topographic studies of the pharynx of the donkey]. XIV International Symposium for Students and Young Researchers “Youth and the Scientific and Technological Revolution”, VMEI “V. I. Lenin”, Plovdiv, November, 18-20, (BG). 
* Gadjev, S. & Katrandzhiev, D. (1988). Anatomo-topografski izsledvania na venoznite sadove na toraksa pri domashnata kotka (felis domestica) [Anatomo-topographical studies of the venous blood vessels of the thorax in the domestic cat (felis domestica)]. Youth Scientific Session “Scientific and technical progress - a decisive factor for qualitatively new growth in the agriculture and food industry”, Agricultural Academy, Kostinbrod, May, 19-20, (BG). 
* Gadjev, S. & Katrandzhiev, D. (1989). Sravnitelni anatomichni i topografski izsledvania na skeleta na glavata na magare i kon [Comparative anatomical and topographical studies on the skeleton of the head in donkey and horse]. Xth Jubilee National Congress Anatomy Histology and Embryology with International Participation. Stara Zagora, May, 25-28, (BG). 
* Gadjev, S. & Benev, T. (1989). Osobenosti v ustroistvoto na suhozhilnia aparat na dopalnitelnata karpalna i petna kost [Some structural characteristics of the tendon apparatus of the additional carpal and heel bone in the horse]. Scientific Works, Higher Institute of Zootechnics and Veterinary Medicine, Faculty of Veterinary Medicine, XXXIII, I, 43-52, (BG). 
* Gadjev, S. (1989). Varhu niakoi osobenosti v ustroistvoto na grakliana pri konya [Some characteristics of the structure of the larynx in horses]. Scientific Works Higher Institute of Zootechnics and Veterinary Medicine, Faculty of Veterinary Medicine, XXXIII, I, 67-73, (BG). 
* Gadjev, S., Ivanov, I., Katrandzhiev, D., Sandev, N. & Mednikarov, A. (1990). Anatomo-topografski osobenosti na vena epigastrica cranialis superficialis pri laktirashti kravi [Anatomo-topographical characteristics of vena epigastrica cranialis superficialis in lactating cows]. Zhivotnovadni nauki / Animal Science, XXVII, 6, 63-66, (BG). 
* Atanasov, K. & Gadjev, S. (1995). Sluchai na vrodena Peromelia (Monomelia) posterior dextra pri tele. Anatomichni i tsitogenetichni izsledvania [A case of congenital Peromelia (Monomelia) posterior dextra in a calf. Anatomical and cytogenetic analyses]. Zhivotnovadni nauki / Animal Science, XXXII, 5-8, 158-161, (BG). 
* Tanchev, S., Katsarov, V., Doychev, V. & Gadjev, S. (1995). Kraneologichno prouchvane na divi i domashni svine i tehnite hibridi [Comparative study of cranium in wild boars, domestic pigs and their hybrids]. Zhivotnovadni nauki / Animal Science, XXXII, 5-8, 162-164, (BG). 
* Ribarski, S., Gadjev, S., Doychev, V., Stefanov, M. & Katsarov, V. (1997). Sravnitelni histologichni prouchvania na skeletnata muskulatura pri divi, aborigenni i kulturni porodi praseta [Comparative histological studies of skeletal musculature in wild, aboriginal and domestic pigs]. Zhivotnovadni nauki / Animal Science (supplement), 23-26, (BG). 
* Gadjev, S. & Ribarski, S. (1997). Sravnitelni anatomichni izsledvania varhu venite na glavata pri magareto i konya [Comparative anatomical studies on head veins of the donkey and the horse]. Veterinarnomeditsinski nauki / Veterinary Science, XXIX, 1-2, 36-41, (BG).
* Gadjev, S. & Ribarski, S. (1997). Sravnitelni anatomo-topografski izsledvania varhu m. stylopharyngeus caudalis pri magareto i konya [Comparative anatomo-topographic studies on m. stylopharyngeus caudalis in the donkey and the horse]. Veterinarnomeditsinski nauki / Veterinary Science, XXIX, 1-2, 42-44, (BG). 
* Gadjev, S. & Dechev, A. (1997). Sravnitelni anatomichni izsledvania varhu arteriite na glavata pri magareto i konya [Comparative anatomical studies on donkey and horse head arteries]. Veterinarnomeditsinski nauki / Veterinary Science, XXIX, 1-2, 45-50, (BG). 
* Dechev A. & Gadjev, S. (1997). Sravnitelni anatomo-topografski izsledvania na okoloosnite sinusi pri Trakiyskata tankorunna i Starozagorska poroda ovtse [Comparative anatomo-topographic studies of perinasal sinuses of Thracian fine-fleeced and Stara Zagora sheep breeds]. Veterinarnomeditsinski nauki / Veterinary Science, XXIX, 1-2, 71-74, (BG). 
* Stefanov, M., Chervenkov, S., Gadjev, S., Grueva, G. & Vladova, D. (1997). Comparative topographic study on microhardness of metacarpal and metatarsal bones in equids /Equus Cabalus and Equus Azinus/, Bulgarian Journal of Agricultural Science, 3, 501-506, (EN). 
* Stefanov, M., Gadjev, S. & Ribarski, St. (1997). Comparative metric studies on metacarpal and metatarsal bones in Equids. Bulgarian Journal of Agricultural Science, 3, 611-615, (EN).
* Iliev, I., Kutsarov, G., Dechev, A., Gadjev, S., Tomov, T., Konakchieva, R. & Karamanos, P. A. (1998). Vliyanie na hipokineziyata varhu plazmenata kontsentratsia na kortizola i nyakoi faktori na nespetsifichnata rezistentnost pri agneta [Influence of hypokinesis on plasma concentratrion of cortisol and some factors of nonspecific resistance in lambs]. Zhivotnovadni nauki / Animal Science, XXXV, 6, 64-68, (BG).
* Gadjev, S. & Stefanov, M. (1998). Anatomichni osobenosti na visyashtite prasti pri bivola [Anatomical particularities of hanging fingers in buffaloes]. Zhivotnovadni nauki / Animal Science, 3, 77-78, (BG). 
* Kostov, D, Gadjev, S., Vladova, D. & Christov, Chr. (1998). Morfologichni prouchvania varhu insertsiyata na diafragmata pri agneta [Morphological investigations on lamb diaphragm insertion]. Zhivotnovadni nauki / Animal Science, 6, 80-82, (BG). 
* Gadjev, S. & Stefanov, M. (2000). Varhu izvodnata sistema na pankreasa pri domashnite zhivotni [Upon pancreas duct system in domestic animals]. Zhivotnovadni nauki / Journal of Animal Science, 2, 80-83, (BG).
* Doichev, V., Bjalkov, V., Gadjev, S., Katzarov, V., Tanchev, S. & Szostak, B. (2000). Morphometrical analysis of skull of native East Balkan pig. Animal Science Papers and Reports, Institute of Genetics and Animal Breeding, Jastrębiec, Poland, 18(3), 183-194, (EN).
* Vladova, D., Gadjev, S. & Kostov, D. (2002). Sravnitelni morfologichni prouchvania varhu insertsiyata na diafragmata pri agneta i yareta [Comparative morphological investigations on lambs and kids diaphragm insertion]. Zhivotnovadni nauki / Journal of Animal Science, 2, 79-80, (BG). 
* Gadjev, S. & Ribarski, S. (2004). Podezichen aparat pri magare i kon [Hyoid apparatus in donkey and horse]. Zhivotnovadni nauki / Journal of Animal Science, XLI, 6, 45-46, (BG).
=== Popular Science Articles ===
* . Iskam da si kupya edro magareto [I want to buy a big donkey]. Lobi-Hobi magazin / Lobby-Hobby Shop, III, 43, 25.10-01.11.1993, (BG).
* Gadjev, S. (1993)Gadjev, S. (1988). Chudnite mrezhi v sadovata sistema na nyakoi bozainitsi [Rete mirabille of the vascular system of some mammals]. Priroda / Nature, 1, 23-26, (BG).
* Gadjev, S. (1988). Ulyam Harvei – Otkrivatelyat na kravoobrashtenieto [William Harvey – The discoverer of the circulatory system]. Priroda / Nature, 2, 86-88, (BG).
* Gadjev, S. (1988). Odomashnyavane na divite zhivotni [Domestication of wild animals]. Priroda i znanie / Nature and Knowledge, 5, 32-33, (BG).
* Gadjev, S. (1988). Zhivotinskoto sartse [The animal heart]. Priroda / Nature, 6, 50-52, (BG).
* Gadjev, S. (1989). Kravosnabdyavane na glavniya mozak pri zhivotnite i choveka [Blood supply of the cerebrum in animals and humans]. Priroda / Nature, 4, 25-31, (BG).
* Gadjev, S. (1989). Kravonosnite sadove i termoregulatsiyata [Blood vessels and thermoregulation]. Priroda / Nature, 5, 49-51, (BG).
* Gadjev, S. (1989). Yaytsata pri ptistite [Birds’ eggs]. Priroda i znanie / Nature and Knowledge, 7, 5-7, (BG). 
* Gadjev, S. (1989). Kak spyat ptitsite [How do birds sleep?]. Priroda i znanie / Nature and Knowledge, 7, 4-5, (BG).
* Gadjev, S. (1991). Poznaite tezi ptitsi [Can you recognise these birds?]. Priroda i znanie / Nature and Knowledge, 7, 8, 30, (BG).
* Gadjev, S. (1992). Kakvo znaem za skeleta na ptitsite [What do we know about the skeleton of birds?]. Priroda i znanie / Nature and Knowledge, 5, 18, (BG).
* Gadjev, S. (1992). Magareto [The donkey]. Priroda i znanie / Nature and Knowledge, 6, 18-20, (BG).
* Gadjev, S. (1992). Magareto v izkustvoto [The donkey in art]. Lobi-Hobi magazine / Lobby-Hobby Shop, III, 17, 26.04-03.05.1992, (BG).
* Gadjev, S. (1992). Zabite na kotkata [The cat’s teeth]. Lobi-Hobi magazine / Lobby-Hobby Shop, II, 51, 21.12.1992, (BG). 
* Gadjev, S. (1993). Zashto se prozyavat i protyagat zhivotnite [Why do animals yawn and stretch?]. Priroda i znanie / Nature and Knowledge, 1, 18-19, (BG).
* Gadjev, S. (1993). Gazovata zhleza pri ptitsite [The gas gland of fish]. Priroda i znanie / Nature and Knowledge, 7-8, 26-27, (BG).
* Gadjev, S. (1993). I magareto ima zasluga za dneshnia oblik choveshki [Donkey’s contribution to today’s human appearance]. Uspeshna ferma / Successful Farm, III, 9(23), 20-21, (BG).
* Gadjev, S. (1993). Prakticheski saveti pri rabota s magareta [Practical advice on working donkeys]. Uspeshna ferma / Successful Farm, III, 9(23), 21, (BG).
* Gadjev, S. (1993). Agresiyata ne mu e chuzhda [Aggression is no stranger to him]. Uspeshna ferma / Successful Farm, III, 10(24), (BG).
* Gadjev, S. (1993). Magareto strada ot ranno natovarvane [The donkey suffers from heavy workload at an early age]. Uspeshna ferma / Successful Farm, III, 10(24), 19, (BG).
* Gadjev, S. (1993). Ne vinete svinete za spetsifichnata im mirizma [Don’t blame the pigs for their specific smell]. Uspeshna ferma / Successful Farm, III, 12(26), 23, (BG).
* Gadjev, S. (1993). Magareto v meditsinata [The donkey in medicine]. Lobi-Hobi magazin / Lobby-Hobby Shop, III, 9, 1-8.03.1993, (BG).
* Gadjev, S. (1993). Hibridizatsia (krastosvane) pri magaretata [Hybridization of donkeys]. Lobi-Hobi magazin / Lobby-Hobby Shop, III, 19, 10-17.05.1993, (BG).
* Gadjev, S. (1993). Nadopashnata zhleza pri kucheto i kotkata [Gll. supracaudalis of a dog and a cat]. Lobi-Hobi magazin / Lobby-Hobby Shop, III, 20, 11-24.05.1993, (BG).
* Gadjev, S. (1993). Znaete li zashto revat magaretata [Do you know why do donkeys bray?]. Lobi-Hobi magazin / Lobby-Hobby Shop, III, 26, 28.06-05.07.1993, (BG).
* Gadjev, S. (1993). Kogato si kupim magare [When you buy a donkey]. Lobi-Hobi magazin / Lobby-Hobby Shop, III, 28, 12-19.07.1993, (BG).
* Gadjev, S. (1993). Otglezhdane na magareta [Donkey husbandry]. Lobi-Hobi magazin / Lobby-Hobby Shop, III, 34, 23.08-30.08.1993, (BG).
* Gadjev, S. (1993). Otglezhdane na magaretata (prodalzhenie) [Donkey husbandry (cont.)]. Lobi-Hobi magazin / Lobby-Hobby Shop, III, 35, 30.08-06.09.1993, (BG).
* Gadjev, S. (1993). Dneven toilet na magareto [Daily personal hygiene of the donkey]. Lobi-Hobi magazin / Lobby-Hobby Shop, III, 40, 4-11.10.1993, (BG).
* Gadjev, S. (1993). Tretiyat klepach [The third eyelid]. Lobi-Hobi magazin / Lobby-Hobby Shop, III, 46, 15-22.11.1993, (BG).
* Gadjev, S. (1993). Kak spyat magaretata? [How do donkeys sleep?]. Lobi-Hobi magazin / Lobby-Hobby Shop, III, 47, 22-29.11.1993, (BG).
* Gadjev, S. (1993). Kak spyat ptitsite? [How do birds sleep?]. Lobi-Hobi magazin / Lobby-Hobby Shop, III, 48, 29.11-06.12.1993, (BG).
* Gadjev, S. (1994). Bodbradichkoviyat organ pri kotkite mozhe da okepazi vanshnia im vid [Organon submentalis of the cats can be damaging to their outer appearance]. Lobi-Hobi magazin / Lobby-Hobby Shop, IV, 4, 24-31.01.1994, (BG).
* Gadjev, S. (1994). Nadopashnata zhleza sazdava problemi [Gll. supracaudalis causes problems]. 101 priyateli / 101 Friends, 2, 12, (BG).
* Gadjev, S. (1994). Mlechnite zhlezi na kotkata sa chuvstvitelni [Cat’s mammary glands are very sensitive]. 101 priyateli / 101 Friends, 2(5), 22, (BG).
* Dechev, А. & Gadjev, S. (1994). Oshte za reproduktivnite organi pri kokoshtata [More about the reproductive organs of the hen]. Ptitsevadstvo / Bird husbandry, 4, 10-11, (BG).
* Gadjev, S. (1998). Vsichko za magareto [All about the donkey]. Veterinarnomeditsinski novini / Veterinary Medicine News, 6, 22-23, (BG).
* Gadjev, S. (1998). Vsichko za magareto [All about the donkey]. Veterinarnomeditsinski novini / Veterinary Medicine News, 7, 28-29, (BG).
* Gadjev, S. (1998). Vsichko za magareto [All about the donkey]. Veterinarnomeditsinski novini / Veterinary Medicine News, 9, 21-22, (BG).
* Gadjev, S. (2002). Osobenosti na stomaha na nyakoi vidove ptitsi [Peculiarities of the stomach of some birds]. Agrovestnik / Agro Newspaper, 44, 7, 15.11.2002, (BG).
* Gadzheva, М. & Gadzhev, S. (2008). Radiochestotna identifikatsiya (RFID) vav veterinarnata meditsina [Radio-frequency identification (RFID) in veterinary medicine]. Veterinarnomeditsinski novini / Veterinary Medicine News, 7-8, 10-16, (BG).
== References ==
Popov, Ch., Pashov, D., Popova, M. & Mironova, M. (1993). Almanac 70 years of the Faculty of Veterinary Medicine 1923 - 1993, Stara Zagora, p. 73.
Andreev, Z. (2013). Tatari. Notes on the history of the village. Svishtov: Tsenov Academic Publishing House, p. 123.
Ivanova, T. (1993). History of the Faculty of Veterinary Medicine 1923 - 1993, Stara Zagora: Research Sector at the Higher Institute of Zootechnics and Veterinary Medicine, pp. 211, 265, 278.
Almanac 90 years of the Faculty of Veterinary Medicine 1923 - 2013, Stara Zagora: 2013.
Almanac 95 years of the Faculty of Veterinary Medicine 1923 - 2018, Stara Zagora: 2018, p. 40.
77 Veterinarians received diplomas today, News Business Policy nbp.bg, February 13, 2015, visited on July 25, 2020.
Ivanova, T. (2003). Almanac 80 years of the Faculty of Veterinary Medicine 1923 - 2003, Stara Zagora, p. 77.
Register of Academic Staff and Dissertations of the National Centre for Information and Documentation (NACID) https://ras.nacid.bg/dissertations-search
Category:1940 births
Category:2017 deaths
Category:Bulgarian veterinarians
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Category:Bulgarian academics