Keith F. Otterbein Dr Keith F. Otterbein was 'n Emeritus-Professor van Antropologie by die Universiteit van Buffalo (SUNYAB), in die Verenigde State van Amerika. Dr. Otterbein was 'n voormalige president van die Menslike Verhoudings Gebied Lêers en is 'n gereelde bydraer tot kruis-kulturele navorsing, veral in oorlogvoering verwante onderwerpe. Otterbein is die outeur van die boek How The War Began (2004), waarin hy  die oorsprong van oorlogvoering ondersoek in die menslike samelewing. Hy is oorlede op 17 Junie 2015. The Evolution of Zulu Warfare, 1964, Kansas Journal of Sociology. Internal War: A Cross-Cultural Study 1968 American Anthropologist. Higi Armed Combat 1978, Southwestern Journal of Anthropology. The Evolution of War: A Cross-Cultural Study 1970 HRAF Press, New Haven. (2nd Ed. 1985) Killing of Captured Enemies: A Cross-Cultural Study 2000 Current Anthropology. Keith F. Otterbein Feuding and Warfare - Book Review, ISBN 978-2-88124-621-0 obituarie