@inbook{Lazarus2002,
author = {Lazarus, J. },
title= {Human sex ratios: Adaptations and mechanisms, problems and prospects},
year = {2002},
doi = {10.1017/CBO9780511542053.015},
editor = {Hardy, I.C.W. },
booktitle = {Sex Ratios: Concepts and Research Methods},
address = {Cambridge },
publisher = {Cambridge University Press},
}