 Croatian historian Vladimir Žerjavić initially estimated the number of Muslims and Croats killed by the Chetniks as 65,000 (33,000 Muslims and 32,000 Croats; both combatants and civilians).In 1997, he revised this figure down to 47,000 dead (29,000 Muslims and 18,000 Croats).According to Vladimir Geiger of the Croatian Institute of History, Zdravko Dizdar, a historian, estimates Chetniks killed a total of 50,000 Croats and Muslims — mostly civilians — between 1941 and 1945.