Study on the relationship between the spatial feature of urban population aging and the pension resources matching ——take the three provinces of the Northeast China as an example
Dongxia ZHAO, Zenglin HAN, Qilong REN, Wanbo LIU, Qian PEI
Resources Science . 2018, (9): 1773 -1786 .  DOI: 10.18402/resci.2018.09.08