DAVIDOVIĆ, Dušan; KEŠETOVIĆ, Želimir. Comparative Overview of Legislation Governing Private Security in the EU. Zbornik Instituta za kriminološka i sociološka istraživanja, Belgrade, Serbia, v. 28, n. 1–2, p. 79–92, 2009. Disponível em: https://zbornik-iksi.rs/index.php/home/article/view/120. Acesso em: 4 apr. 2026.