@article{Portes2002,
author = {Portes, A. and Haller, W.J. and Guarnizo, L.E. },
title= {Transnational entrepreneurs: An alternative form of immigrant economic adaptation},
year = {2002},
doi = {10.2307/3088896},
journal = {American Sociological Review},
volume = {67},
number = {2},
pages = {278--298},
}