SANDOVAL GARCÍA, Carlos. Some challenges of migration research. Reflections from Costa Rica. ECA: Estudios Centroamericanos, [S. l.], v. 62, n. 699-700, p. 143–149, 2007. DOI: 10.51378/eca.v62i699-700.5059. Disponível em: https://revistas.uca.edu.sv/eca/article/view/5059. Acesso em: 14 nov. 2026.