H. Jin, Y. He, și C. Zhao, „Social Security Expenditure, Demographic Structural Changes, and Urban?Rural Income Gap in China: Evidence from the Provincial Data”, rcis, vol. 62, pp. 254–277, sep. 2018, Data accesării: nov. 07, 2026. Disponibil la: https://www.rcis.ro/journal/article/view/2463-social-security-expenditure-demographic-structural-changes