@inbook{Schultz2002,
author = {Schultz, T.P. },
title= {Fertility transition: economic explanations},
year = {2002},
editor = {Smelser, N.J.},
editor = {Baltes, P.B.},
booktitle = {International Encyclopedia of the Social & Behavioral Sciences},
address = {Oxford},
publisher = {Pergamon},
pages = {5578--5584},
}