1. Lill, A. Z. Tierpsychol. 36, 1–36 (1974).
2. Floody, O.R. & Arnold, A.P. Z. Tierpsychol. 37, 192–212 (1975).
3. Bradbury, J., Gibson, R.M. & Tsai, I.M. Anim. Behav. 34, 169–179 (1987).
4. Wiley, R.H. Q. Rev. Biol. 49, 201–227 (1978).
5. Bradbury, J.W. & Gibson, R.M. in Male Choice (ed. Bateson, P.P.G.), 109–138 (Cambridge University Press. 1983).