Zefreh, Mohammad Maghrour, Ferenc Meszaros, Raimundas Junevičius, and Adam Torok. “Economic Investigation of a Public Transport Support Policy: A Case Study at Budapest”. Promet - Traffic&Transportation 29, no. 1 (February 22, 2017): 77–84. Accessed August 26, 2025. https://traffic2.fpz.hr/index.php/PROMTT/article/view/2642.