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2. Ridley, M. (1993) The Red Queen: Sex and the Evolution of Human Nature, Viking
3. Buss, D.M. (1994) The Evolution of Desire: Strategies of Human Mating, Basic Books
4. Symons, D. (1995) Beauty is in the adaptations of the beholder: the evolutionary psychology of human female sexual attractiveness, in Sexual Nature/Sexual Culture (Abrahamson, P.R. and Pinker, S.D., eds), pp. 80–118, University of Chicago Press
5. The evolution of human sexuality;Thornhill;Trends Ecol. Evol.,1996