@inproceedings{van de Kaa2002,
author = {van de Kaa, D.J.},
title= {The idea of a Second Demographic Transition in industrialized countries},
year = {2002},
URL = {http://www.ipss.go.jp/webj-ad/WebJournal.files/population/2003_4/Kaa.pdf},
address = {Tokyo, Japan},
}