SHYAMA, C.; DE SILVA, T. Direct and Indirect Income Support and Their Determinants: Developing an Income Profile for Older Adults in Sri Lanka. Journal of Population and Social Studies [JPSS], [S. l.], v. 30, p. 463–487, 2022. Disponível em: https://so03.tci-thaijo.org/index.php/jpss/article/view/259135. Acesso em: 16 sep. 2026.