@inbook{Wachter2003,
author = {Wachter, K.W.},
title= {Biodemography of fertility and family formation},
year = {2003},
editor = {Wachter, K.W.},
editor = {Bulatao, R.},
booktitle = {Offspring. Human Fertility Behaviour in Biodemographic Perspective},
address = {Washington, DC, USA},
publisher = {The National Academic Press},
pages = {1--17},
}