ŠAFRAN, Mario. 13th International Scientific Conference „Science and Transport Development“ (ZIRP 2015). Promet - Traffic&Transportation, [S. l.], v. 27, n. 5, p. 453–454, 2015. DOI: 10.7307/ptt.v27i5.1987. Disponível em: https://traffic2.fpz.hr/index.php/PROMTT/article/view/2556. Acesso em: 26 aug. 2025.