Daniel, J.C. Jr.; Mathew, J.; Mikulka, P.J. 1998. Color discrimination in the white rhinoceros. AZA Annual Conference Proceedings 1997: 592-593.
Daniel, J.C. Jr.; Mikulka, P.J. 1998. Discrimination learning in the white rhinoceros. Applied Animal Behavior Science 58: 197-202, fig. 1.
Daniel, J.C. Jr.; Adam, M.; Orden, A.C. van 1995. Keratin structures of Ceratotherium. Regional Conference Proceedings of the AZA 1995: 537-541, 2 figures (8 plates).
Daniel, J.C. Jr. 1995. Visual acuity of the rhinoceros. AZA Annual Conference Proceedings 1994: 343-346, 2 figures.
Orden, A.C. van; Daniel, J.C. Jr. 1993. Structure and composition of rhinoceros horn. Biomolecular materials: Symposium held December 1-3, 1992, Boston, Massachusetts, U.S.A. (Pittsburgh, Pa. : Materials Research Society): pp. 48-56.






