Wirtz, Peter Verhaltensphysiologie, Seewiesen, Max Planck Institut für Ornithologie, Max Planck Society;
Wirtz, P. (1981). Territorial defence and territory take-over by satellite males in the waterbuck Kobus ellipsiprymnus (Bovidae). Behavioral Ecology and Sociobiology, 8(2), 161-162. doi:10.1007/BF00300830.