Else, J. G. 1985. Captive propagation of vervet monkeys (Cercopithecus aethiops) in harems. Laboratory Animal Science 35, 373-375.

Animals were placed randomly in ten single-male harem groups with 5-10 females per enclosure. This resulted in considerable fighting among the females. Each group was gradually reduced over a one year period to 2-4 females with their young. ... Three adult females died during the [three year] study. All had been under fairly continual harassment.