@article{Zeng1985,
author = {Zeng, Y. and Vaupel, J.W. and Yashin, A.I.},
title= {Marriage and fertility in China: A graphical analysis},
year = {1985},
doi = {10.2307/1973461},
journal = {Population and Development Review},
volume = {11},
number = {4},
pages = {721--736},
}