@article{Yi2000,
author = {Yi, Z. and Zhenglian, W. and Zhongdong, M. and Chunjun, C.},
title= {A simple method for projecting or estimating α and β: An extension of the Brass Relational Gompertz Fertility Model},
year = {2000},
doi = {10.1023/A:1010695000412},
journal = {Population Research and Policy Review},
volume = {19},
number = {6},
pages = {525--549},
}