@inbook{Lesthaeghe1986,
author = {Lesthaeghe, R.  and van de Kaa, D.J.},
title= {Twee demografische transities?},
year = {1986},
booktitle = {Groei en krimp. Mens en Maatschappij, annual book volume},
address = {Deventer},
publisher = {Van Loghum-Slaterus},
pages = {9--24},
}