@article{Saperstein2012,
author = {Saperstein, A. and Penner, A.M.},
title= {Racial Fluidity and Inequality in the United States},
year = {2012},
doi = {10.1086/667722},
journal = {American Journal of Sociology},
volume = {118},
number = {3},
pages = {676--727},
}