Oliveira, Catarina Reis, João Peixoto, and Pedro Góis. “The New Refugee Crisis in Europe: The Repulsion-Attraction Model Revisited and the Challenges for Migration Policies”. Brazilian Journal of Population Studies 34, no. 1 (August 23, 2017): 73–98. Accessed September 18, 2025. https://www.rebep.org.br/revista/article/view/1050.