@inbook{Verkade2006,
author = {Verkade, E. and Vermeulen, W. and Brouwer, J.},
title= {Regional developments, population and employment [in Dutch]},
year = {2006},
booktitle = {Welfare, Prosperity and Quality of the Living Environment [in Dutch]},
address = {The Hague},
publisher = {CPB & PBL},
pages = {17--43},
}