@inbook{Dykstra1999,
author = {Dykstra, P.A. and Van Wissen, L.J.G.},
title= {Introduction: the life course approach as an interdisciplinary framework for population studies},
year = {1999},
editor = {Van Wissen, L.J.G.},
editor = {Dykstra, P.A.},
booktitle = {Population Issues: An Interdisciplinary Focus},
address = {New York},
publisher = {Plenum Press},
pages = {1--22},
}