Takács Péter. „Operating Urban Public Transport Rail Infrastructure and Vehicles over Planned Life Cycle and Its Economic Aspects Within the Company: (Analysis and Fine-Tuning of the Science Based Continued Operation Protocol (scop) Decision Support Model)”. Studia Mundi – Economica 7, no. 2 (május 20, 2020): 65–78. Elérés december 5, 2025. https://journal.uni-mate.hu/index.php/stm/article/view/3396.