@article{Logan2002,
author = {Logan, J.R. and Alba, R.D. and Zhang, W. },
title= {Immigrant enclaves and ethnic communities in New York and Los Angeles},
year = {2002},
doi = {10.2307/3088897},
journal = {American Sociological Review },
volume = {67},
number = {2},
pages = {299--322},
}