| Kiefer, B.; Wichert, B.; Ganslosser, U.; Kretzschmar, P.; Kienzle, E., 2002. Digestibility trials in the zoo compared to field studies of white rhinoceros: pp. 190-195, fig. 1, tables 1-4
| In: Schwammer, H.M. et al. A research update on elephants and rhinos: proceedings of the International Elephant and Rhino Research Symposium, Vienna, June 7-11, 2001. Muenster, Schuling: pp. 1-352 |
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