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, vol. 1, no. 2, June 2025, pp. 1-16, https://doi.org/10.63947/bvtn.v1i2.1.