HEIKKILÄ, E. Global Migration Increasing and Concentrating to Certain Countries. Migration-Muuttoliike, [S. l.], v. 47, n. 2, p. 34–35, 2021. Disponível em: https://siirtolaisuus-migration.journal.fi/article/view/109449. Acesso em: 25 huhti. 2024.