Question: Between Mikhail Kravchuk and Efim Zelmanov who wrote more articles on mathematics? 
Context: The College Mathematics Journal (ISSN 0746-8342  ), published by the Mathematical Association of America, is an expository journal aimed at teachers of college mathematics, particular those teaching the first two years.  It is a continuation of "Two-Year College Mathematics Journal".  It covers all aspects of mathematics.  It publishes articles intended to enhance undergraduate instruction and classroom learning, including expository articles, short notes, problems, and "mathematical ephemera" such as fallacious proofs, quotations, cartoons, poetry, and humor. He played ten times in Soviet Championships.  In 1929, he took 3rd in Odessa (6th URS-ch; Boris Verlinsky won).  In 1931, he took 7th in Moscow (7th URS-ch; Mikhail Botvinnik won).  In 1933, he took 9th in Leningrad (8th URS-ch; Botvinnik won).  In 1934/35, he tied for 9-12th in Leningrad (9th URS-ch; Grigory Levenfish and Ilya Rabinovich won).  In 1937, he took 13th in Tbilisi (10th URS-ch; Levenfish won).  In 1939, he tied for 13-14th in Leningrad (11th URS-ch; Botvinnik won).  In 1945, he took 17th in Moscow (14th URS-ch; Botvinnik won).  In 1947, he tied for 13-15th in Leningrad (15th URS-ch; Paul Keres won).  In 1952, he took 18th in Moscow (20th URS-ch; Botvinnik and Mark Taimanov won).  In 1955, he took 17th in Moscow (22nd URS-ch; Vasily Smyslov and Efim Geller won). Efim Isaakovich Zelmanov (Russian: Ефи́м Исаа́кович Зе́льманов ; born 7 September 1955 in Khabarovsk) is a Russian-American mathematician, known for his work on combinatorial problems in nonassociative algebra and group theory, including his solution of the restricted Burnside problem.  He was awarded a Fields Medal at the International Congress of Mathematicians in Zürich in 1994. Mikhail Kravchuk (Belarusian: Мiхаiл Краўчук ; Russian: Михаил Кравчук ; born 19 September 1991) is a Belarusian professional football player currently playing for Luch Minsk. Taras Shevchenko University or officially the Taras Shevchenko National University of Kyiv (Ukrainian: Київський національний університет імені Тараса Шевченка ), colloquially known in Ukrainian as KNU (Ukrainian: Київський національний універcитет - КНУ ) is located in Kiev, the capital of Ukraine.  KNU is ranked within top 500 Universities in the world founded in 1834.  It is the third oldest university in Ukraine after the University of Lviv and University of Kharkiv.  Currently, its structure consists of fifteen faculties (academic departments) and five institutes.  It was founded in 1834 as the Kiev Imperial University of Saint Vladimir, and since then it has changed its name several times.  During the Soviet Union era, Taras Shevchenko University was one of the top-three universities in the USSR, along with Moscow State University and Leningrad State University.  It is ranked as the best university in Ukraine in many rankings (see below).  Throughout history, the university has produced many famous alumni including Nikolay Bunge, Mykhailo Drahomanov, Mykhailo Hrushevskyi, Nikolai Berdyaev, Mikhail Bulgakov, Viacheslav Chornovil, Leonid Kravchuk, and many others.  Taras Shevchenko himself, banned from educational activities for political reasons, worked for the Kyiv University as a field researcher. Gonit Sora (Assamese: গণিত চ’ৰা) is a multi-lingual (English and Assamese) web magazine devoted to publishing well written and original articles related to science and technology in general and mathematics in particular.  Gonit Sora is an attempt to bridge the gap between classroom mathematics teaching and real life practical and fun mathematics.  The website strives for the popularization of mathematics teaching and understanding at all levels.  The name of the website is in Assamese and means ‘gateway to mathematics’.  Founded on 21 April 2011 by two alumni of Tezpur University, the website publishes expository articles, interviews and quizzes. Mykhailo Pylypovych Kravchuk, also Krawtchouk (Ukrainian: Миха́йло Пили́пович Кравчу́к ) (September 27, 1892 – March 9, 1942), was a Soviet Ukrainian mathematician who, despite his early death, was the author of around 180 articles on mathematics. Lutsk Gymnasium #  21 after Mikhail Kravchuk  is an elementary (grades 1-4), middle (grades 5-9) and high (grades 10-11) school with the specialization in some subjects, determined yearly according to the students' and parents' wishes, recommendations of senior teachers and a stuff phycologist. Mathematics Magazine is a refereed bimonthly publication of the Mathematical Association of America.  Its intended audience is teachers of collegiate mathematics, especially at the junior/senior level, and their students.  It is explicitly a journal of mathematics rather than pedagogy.  Rather than articles in the terse "theorem-proof" style of research journals, it seeks articles which provide a context for the mathematics they deliver, with examples, applications, illustrations, and historical background. Mikhail Kukushkin successfully defended his title, defeating Konstantin Kravchuk in the final 6–3, 6–7(3), 6–3.
Answer: Mykhailo Pylypovych Kravchuk