Sauspeter, Gila, et al. “Body Condition Scoring of White (Ceratotherium Simum) and Black Rhinoceros (Diceros Bicornis) in European Zoos”. Journal of Zoo and Aquarium Research, vol. 14, no. 1, Jan. 2026, pp. 13-24, doi:10.19227/jzar.v14i1.941.