Bokor, Zoltan, and Rita Markovits-Somogyi. “Improved Cost Management at Small and Medium Sized Road Transport Companies: Case Hungary”. Promet - Traffic&Transportation 27, no. 5 (October 28, 2015): 417–428. Accessed August 26, 2025. https://traffic2.fpz.hr/index.php/PROMTT/article/view/2554.