Myburgh, Jan G.; Kirberger, Robert M.; Steyl, Johan Christian Abraham; Soley, John Thomson; Booyse, Dirk J.; Huchzermeyer, Fritz W.; Lowers, Russell H.; Guillette, Louis J.(OpenJournals Publishing, 2014-05-05)
Hartman, Marthinus Jacobus; Kirberger, Robert M.; Tordiffe, Adrian Stephen Wolferstan; Boy, Sonja Catharina; Schoeman, Johan P.(BMJ Publishing Group, 2015-02)
Dvir, Eran; Kirberger, Robert M.; Clift, Sarah Jane; Van der Merwe, Liesel Laura(Israel Journal of Veterinary Medicine / Israel Veterinary Medical Association, 2010)