Dobrodolac, Momčilo, Predrag Ralević, Libor Švadlenka, and Valentina Radojičić. “Impact of a New Concept of Universal Service Obligations on Revenue Increase in the Post of Serbia”. Promet - Traffic&Transportation 28, no. 3 (May 27, 2016): 235-244. Accessed December 4, 2024. https://traffic.fpz.hr/index.php/PROMTT/article/view/1835.