The spatial patterns and determinants of internal migration of older adults in China from 1995 to 2015
LIU Ye, HUANG Cuiying, WU Rongwei, PAN Zehan, GU Hengyu
Journal of Geographical Sciences . 2022, (12): 2541 -2559 .  DOI: 10.1007/s11442-022-2060-z