@techreport{Frey2005,
author = {Frey, W.H. and Liaw, K. and Wright, R. and White, M.J.},
title= {Migration within the United States: Role of race-ethnicity [with comments},
year = {2005},
doi = {10.1353/urb.2006.0004},
publisher = {Brookings Institution Press},
address = {Washington, DC},
institution = {Brookings-Wharton Papers on Urban Affairs},
}