@article{Koopmans2012,
author = {Koopmans, R. and Michalowski, I. and Waibel, S.},
title= {Citizenship rights for immigrants: National political processes and cross-national convergence in Western Europe, 1980–2008},
year = {2012},
doi = {10.1086/662707},
journal = {American Journal of Sociology},
volume = {117},
number = {4},
pages = {1202--1245},
}