Ramsay, E.
Langan, J.N.; Ramsay, E.C.; Schumacher, J.; Chism, T.; Adair, S. 2001. Diagnosis and management of a patent urachus in a white rhinoceros calf (Ceratotherium simum simum). Journal of Zoo and Wildlife Medicine 32 (1): 118-122, figs. 1-2.
Ramsay, E.C.; Moran, F.; Roser, J.F.; Lasley, B.L. 1994. Urinary steroid evaluations to monitor ovarian function in exotic ungulates: X. Pregnancy diagnosis in Perissodactyla. Zoo Biology 13: 129-147.
Ramsay, E.C.; Zainuddin, Z.Z. 1993. Infectious diseases of the rhinoceros and tapir.
Ramsay, E.C.; Kasman, L.H.; Lasley, B.L. 1987. Urinary steroid evaluations to monitor ovarian function in exotic ungulates: V. Estrogen and pregnanediol-3-glucuronide excretion in the black rhinoceros (Diceros bicornis). Zoo Biology 6: 275-282, fig. 1, tables 1-2.
Kasman, L.H.; Ramsay, E.C.; Lasley, B.L. 1986. Urinary steroid evaluations to monitor ovarian function in exotic ungulates: III. Estrone sulfate and Pregnanediol-3-Glucoronide excretion in the Indian Rhinoceros (Rhinoceros unicornis). Zoo Biology 5: 355-361, figs. 1-3.
Ramsay, E.C.; Kasman, L.H.; Lasley, B.L. 1985. Urinary steroid evaluations for monitoring ovarian function in Indian and Black rhinoceros. Proceedings of the American Association of Zoo Veterinarians 1985: 1.






