BORKOVIĆ, Miroslav; OBRADOVIĆ, Petar; FRANOLIĆ, Igor. Challenges of ’VoiP’ Communication Systems for Air Traffic Management. Promet - Traffic&Transportation, [S. l.], v. 18, n. 1, p. 33–38, 2006. Disponível em: https://traffic2.fpz.hr/index.php/PROMTT/article/view/2145. Acesso em: 26 aug. 2025.