THIỆN NHÂN, Nguyễn. POPULATION AGING IN THE ERA OF DECLINING FERTILITY: EXISTENTIAL CHALLENGES AND SUSTAINABLE DEVELOPMENT PATHWAYS FOR VIETNAM. Journal of Health and Aging - Thong Nhat Hospital, Vietnam, v. 1, n. 2, p. 1–16, 2025. DOI: 10.63947/bvtn.v1i2.1. Disponível em: https://tcsuckhoelaohoa.vn/bvtn/article/view/33. Acesso em: 9 aug. 2025.