Stoilova, Svetla Dimitrova. “A Multi-Criteria Assessment Approach for the Evaluation of Railway Transport in the Balkan Region”. Promet - Traffic&Transportation 31, no. 6 (December 19, 2019): 655-668. Accessed September 19, 2021. https://traffic.fpz.hr/index.php/PROMTT/article/view/3189.