@article{Duan2022,
author = {Duan, C.R. and Qiu, Y.D. and Huang, F. and Xie, D.H.},
title= {From 6.57 million to 376 million: Remarks on migration transition in China},
year = {2022},
volume = {46},
number = {6},
pages = {41--58},
}