@article{Wu2004,
author = {Wu, X. and Treiman, D.J.},
title= {The household registration system and social stratification in China: 1955-1996},
year = {2004},
doi = {10.1353/dem.2004.0010},
journal = {Demography},
volume = {41},
number = {2},
pages = {363--384},
}