Authors: Patton, ML Swaisgood, RR Czekala, NM White, AM Fetter, GA Montagne, JP Rieches, RG Lance, VA

Citation: Ml. Patton et al., Reproductive cycle length and pregnancy in the southern white rhinoceros (Ceratotherium simum simum) as determined by fecal pregnane analysis and observations of mating behavior, ZOO BIOL, 18(2), 1999, pp. 111-127