Basel Zoo; Steck, B.; Pagan, O., 2021. International studbook for the greater one-horned or Indian rhinoceros, Rhinoceros unicornis, 31 December 2021. Basel, Zoologischer Garten, pp. 1-79
Basel Zoo; Steck, B.; Pagan, O., 2020. International studbook for the greater one-horned or Indian rhinoceros, Rhinoceros unicornis, 31 December 2020. Basel, Zoologischer Garten, pp. 1-78
Pagan, O.; von Houwald, F.; Ellis, S.; Ghose, D.; Sharma, A., 2010. Basel Zoo and Indian rhinos: how a zoo can help secure the future of an endangered species. In: Building a future for wildlife: zoos and aquariums committed to biodiversity conservation (Gerald, D. and Gusset, M. eds) WAZA pub: 163-166, 6 images