Radeke-Auer, K.; Wittwer, A.; Aust, J.; Roller, M.; Müller, D.; von Houwald, F.; Steck, B.; Biddle, R.; Versteege, L.; Clauss, M. Reproductive Non-Seasonality in Rhinoceroses: A Review of the in-Situ Literature and Birth Records of Ex-Situ Institutions. JZAR 2022, 10, 23-30.