@article{Levitt2007,
author = {Levitt, P. and Jaworsky, B.N. },
title= {Transnational migration studies: Past developments and future trends},
year = {2007},
doi = {10.1146/annurev.soc.33.040406.131816},
journal = {Annual Review of Sociology },
volume = {33},
number = {7},
pages = {129--156},
}