Ackermann, Rebecca, James Brink, Savvas Vrahimis, and Bonita de Klerk. 2010. “Hybrid Wildebeest (Artiodactyla: Bovidae) Provide Further Evidence for Shared Signatures of Admixture in Mammalian Crania”. South African Journal of Science 106 (11/12): 5 pages. https://sajs.co.za/article/view/10103.