Gerlach, G.; Hoeck, H. N.: Islands on the plains: Metapopulation dynamics and female biased dispersal in hyraxes (Hyracoidea) in the Serengeti National Park. Molecular Ecology 10 (9), pp. 2307 - 2317 (2001)
Hoeck, H. N.: Population dynamics, dispersal and genetic isolation in two species of Hyrax (Heterohyrax brucei and Procavia johnstoni) on habitat islands in the Serengeti. Zeitschrift für Tierpsychologie 59 (3), pp. 177 - 210 (1982)