@article{Hao2015,
author = {Hao, L. and Yeung, W.J.},
title= {Parental spending on school-age children: Structural stratification and parental expectation},
year = {2015},
doi = {10.1007/s13524-015-0386-1},
volume = {52},
number = {3},
pages = {835--860},
}