@article{Guarnizo2003,
author = {Guarnizo, L. and Portes, A. and Haller, W.},
title= {Assimilation and transnationalism: Determinants of transnational political action among contemporary migrants},
year = {2003},
doi = {10.1086/375195},
journal = {American Journal of Sociology},
volume = {108},
number = {6},
pages = {1211--1248},
}