CAMPANA, Paolo. Macro trends in the smuggling of migrants into Europe: An analytical exploration. European Police Science and Research Bulletin, [S.l.], n. 16, p. 57-64, aug. 2017. ISSN 1831-1857. Available at: <https://bulletin.cepol.europa.eu/index.php/bulletin/article/view/242>. Date accessed: 16 jan. 2018.