@article{Portes1993,
author = {Portes, A. and Sensenbrenner, J.},
title= {Embeddedness and immigration: Notes on the social determinants of economic action},
year = {1993},
doi = {10.1086/230191},
journal = {The American Journal of Sociology},
volume = {98},
number = {6},
pages = {1320--1350},
}