@inbook{Lesthaeghe1986, author = {Lesthaeghe, R. and Van de Kaa, D.}, title= {Twee demografische transities?}, year = {1986}, editor = {Lesthaeghe, R.}, editor = {Van de Kaa, D.}, booktitle = {Bevolking: Groei en Krimp}, address = {Arnhem}, publisher = {Van Loghum Slaterus}, pages = {9--24}, }