Modus Operandi and Trends of High-Risk Criminal Networks for Illegal Immigration operating in Republic of Bulgaria. European Law Enforcement Research Bulletin, [S. l.], v. 7, n. 1, 2026. DOI: 10.3013/g30q0d61. Disponível em: https://bulletin.cepol.europa.eu/index.php/cepol/article/view/18. Acesso em: 6 sep. 2026.