1. The use of non-human primates as models for research on human problems, pp. 223-227 in Recent Advances in Primatology, V. 4. ; eds. London, Academic Press, 1978.
2. Factors in the variability of the menstrual cycle
3. Sexual attractivity, proceptivity, and receptivity in female mammals
4. Evolutionary trends in primate sex cycles, pp. 2-35 in Reproductive Biology of The Primates. ed. Basel, Germany, S. Krager Publishing, 1974.