1. Gordon, T. P., and Bernstein, I. S. (1973). Seasonal variation in sexual behavior in all-male rhesus troops.Am. J. Phys. Anthropol. 38: 221–227.
2. Kawai, M., Azuma, S., and Yoshiba, K. (1967). Ecological studies of reproduction in Japanese monkeys (Macaca fuscata). I. Problems of the birth season.Primates 8: 36–73.
3. Koyama, N., Norikoshi, K., and Mano, T. (1975). Population dynamics of Japanese Monkeys at Arashiyama. In Kondo, S., Ehara A., and Kawai, M. (eds.),Contemporary Primatology, Karger, Basel, pp. 411–417.
4. Michael, R. P., and Bonsall, R. W. (1977). A 3-year study of an annual rhythm in plasma androgen levels in male rhesus monkeys (Macaca mulatto) in a constant laboratory environment.J. Reprod. Fertil. 49: 129–131.
5. Michael, R. P., and Bonsall, R. W. (1979). Hormones and the sexual behavior of rhesus monkeys. In Beyer, C. (ed.),Endocrine Control of Sexual Behavior, Raven Press, New York, pp. 279–302.