Seliukov, V. S., and A. H. Vuima. “SOME ISSUES OF LEGAL REGULATION OF MIGRATION POLICY OF THE EUROPEAN UNION”. Bulletin of Kharkiv National University of Internal Affairs, Vol. 73, no. 2, Dec. 2018, pp. 126-35, https://visnyk.univd.edu.ua/index.php/VNUAF/article/view/162.