SI, X. Environmental pollution, population aging and social medical insurance fund expenditure. Advances in Social Sciences Research Journal, [S. l.], v. 8, n. 1, p. 599–609, 2021. DOI: 10.14738/assrj.81.9572. Disponível em: http://116.203.177.230/index.php/ASSRJ/article/view/9572. Acesso em: 23 nov. 2024.