Pankov, Aleksandr, Igor Petuhov, and Vladimir Shestakov. “A Processual Method, the Method Helping to Manage the Quality of Transport Services”. Transport 20, no. 6 (December 19, 2005): 232-235. Accessed November 9, 2024. https://jbem.vgtu.lt/index.php/Transport/article/view/8381.