DOBRODOLAC, Momčilo; RALEVIĆ, Predrag; ŠVADLENKA, Libor; RADOJIČIĆ, Valentina. Impact of a New Concept of Universal Service Obligations on Revenue Increase in the Post of Serbia. Promet - Traffic&Transportation, [S. l.], v. 28, n. 3, p. 235–244, 2016. DOI: 10.7307/ptt.v28i3.1835. Disponível em: https://traffic2.fpz.hr/index.php/PROMTT/article/view/2595. Acesso em: 26 aug. 2025.