Van Sonsbeek, Gerda R.; Van der Kolk, Johannes H.; Van Leeuwen, Johannes P.T.M.; Everts, Hendrik; Marais, Johan; Schaftenaar, Willem(American Association of Zoo Veterinarians, 2013-09)
Gal, Arnon; Barko, Patrick C.; Biggs, Patrick J.; Gedye, Kristene R.; Midwinter, Anne C.; Williams, David A.; Burchell, Richard K.; Pazzi, Paolo(Public Library of Science, 2021-04)
Hudson-Lamb, Gavin Charles; Schoeman, Johan P.; Hooijberg, Emma Henriette; Heinrich, Sonja K.; Tordiffe, Adrian Stephen Wolferstan(AOSIS OpenJournals, 2016-02-26)
Dvir, Eran; Kirberger, Robert M.; Clift, Sarah Jane; Van der Merwe, Liesel Laura(Israel Journal of Veterinary Medicine / Israel Veterinary Medical Association, 2010)