@article{Liu2015,
author = {Liu, T. and Qi, Y. and Cao, G. and Liu, H.},
title= {Spatial patterns, driving forces, and urbanization effects of China’s internal migration: County-level analysis based on the 2000 and 2010 censuses},
year = {2015},
doi = {10.1007/s11442-015-1165-z},
volume = {25},
pages = {236--256},
}