3Dewsbury, D. A. 1972 Patterns of copulatory behavior in male mammals. Quarterly Review of Biology 7 (1): 1～33.
4Dewsbury, D. A 1975 Diversity and adaptation in rodent copulatory behavior. Science 190: 947～954.
5Dewsbury, D. A. and J. D. Pierce Jr. 1989 Copulatory patterns of primates as viewed in broad mammalian perspective. Am. J. Primatol.17: 51～72.
6Dixson, A. F. 1987a Baculum length and copulatory behavior in primates. Am. J. Primatol. 13: 51～60.
7Dixson, A. F. 1987b Observations on the evolution of the genitalia and copulatory behavior in male primates. J.Zool. Lond. 213: 423～443.
8Dixson, A. F. 1989 Effects of sexual selection upon the genitalia and copulatory behavior in male galagos. Int. J.Primatol. 10: 47～55.
9Dixson, A. F. 1998 Primate Sexuality. Oxford: Oxford University Press.
10Eaton, G.G.,A. Slob and J.A.Resko 1973 Cycles of mating behavior, oestrogen and progesterone in the thick-tailed bushbaby (Galago crassicaudatus crassicudatus) under laboratory conditions. Anim. Behav. 21: 309～315.
10Rajpurohit L,Chhangani A,Rajpuohit R,et al.Observation of a sudden resident-male replacement in a unimale bisexual troop of hanuman langurs Semnopithecus entellus around Jodhpur(India).Folia Primatol,2003,69:85-87.
