TOPORNIN, N., Y. SHMIDT, T. SEREGINA, and S. BRATANOVSKII. “Economic Case for Migration Restrictions in Europe”. Utopía Y Praxis Latinoamericana, Vol. 24, no. 1, Dec. 2019, pp. 152-61, https://mail.produccioncientificaluz.org/index.php/utopia/article/view/29989.