Li Qiang and Zhang Zhen. Changes of the Independence in Daily Living at both the Population andthe Individual Levels among the Older Population in China[J]. Population Research, 2018, 42(5): 45-55.
李强 张震. 老年人独立生活能力变化轨迹的个体和总体差异研究[J]. 人口研究, 2018, 42(5): 45-55.