LIĎÁK, Ján. International migration and the diversification of Europe. Kwartalnik Kolegium Ekonomiczno-Społecznego. Studia i Prace, [S. l.], n. 4, p. 85–112, 2013. DOI: 10.33119/KKESSiP.2013.4.4. Disponível em: https://econjournals.sgh.waw.pl/kwes/article/view/181. Acesso em: 22 lip. 2024.