@techreport{Kupiszewska2009,
author = {Kupiszewska, D. and Wiśniowski, A. and Bijak, J.},
title= {Estimation of Population Stocks by Country of Birth, Sex and Age for 1st January 2002-2007},
year = {2009},
URL = {http://www-oud.nidi.knaw.nl/en/projects/230211/},
publisher = {Netherlands Interdisciplinary Demographic Institute},
address = {The Hague},
}