@inbook{Kupiszewska2008,
author = {Kupiszewska, D.  and Nowok, B. },
title= {Comparability of statistics on international migration flows in the European Union},
year = {2008},
editor = {Willekens, F.},
editor = {Raymer, J.},
booktitle = {International migration in Europe: Data, models and estimates},
address = {London},
publisher = {Wiley},
pages = {41--73},
}