HEIKKILÄ, E. Population ageing and unbalanced population development. Migration-Muuttoliike, [S. l.], v. 47, n. 3-4, p. 28–29, 2021. Disponível em: https://siirtolaisuus-migration.journal.fi/article/view/112811. Acesso em: 26 huhti. 2024.