Ren, T. and Li, X. (2018). Analysis of the Impact of Delaying Retirement Policy on Pension Gap Rate. Modern Business, 12, pp.164–165. (In Chinese, ISSN 1673-5889)
Ren, T. and Li, X. (2020). Research on the Cash Payment Model in the Reform of Long-Term Care System. Labour Security World, 09, pp.58–59. (In Chinese, ISSN 1007-7243)