@inbook{Daan1997,
author = {Daan, S. and Tinbergen, J.M.},
title= {Adaptation of life histories},
year = {1997},
editor = {Krebs, J.R.},
editor = {Davies, N.B.},
booktitle = {Behavioural ecology: an evolutionary approach},
address = {Oxford},
publisher = {Blackwell Publishing},
pages = {311--333},
}