@article{Zhang2006,
author = {Zhang, G. and Zhao, Z.},
title= {Reexamining China’s fertility puzzle: Data collection and quality over the last two decades},
year = {2006},
doi = {10.1111/j.1728-4457.2006.00119.x},
journal = {Population and Development Review},
volume = {32},
number = {2},
pages = {293--321},
}