@inbook{van de Kaa2004b,
author = {van de Kaa, D.J.},
title= {Demographic revolutions or transitions. A foreword},
year = {2004b},
editor = {Frejka, T.},
editor = {Sardon, J.P.},
booktitle = {Childbearing trends and prospects in low-fertility countries: A cohort analysis},
address = {Dordrecht},
publisher = {Kluwer Academic Publishers},
pages = {x--xiv},
}