KRAJNC, Roman; SEVER, Drago. Model Approach to Quality Provision of Public Passenger Transport. Promet - Traffic&Transportation, [S. l.], v. 22, n. 1, p. 65–74, 2012. DOI: 10.7307/ptt.v22i1.165. Disponível em: https://traffic2.fpz.hr/index.php/PROMTT/article/view/1443. Acesso em: 27 aug. 2025.