@article{Xu2000,
author = {Xu, X. and Ji, J. and Tung, Y.},
title= {Social and political assortative mating in urban China},
year = {2000},
doi = {10.1177/019251300021001003},
journal = {Journal of Family Issues},
volume = {21},
number = {1},
pages = {47--77},
}