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„THE POSSIBILITIES OF STANDARDIZING THE QUALITY LEVEL IN PUBLIC PASSENGER TRANSPORT FROM CUSTOMER POINT OF VIEW", PC, roč. 9, č. 2, s. 26–37, čvc. 2014, Viděno: 3. březen 2026. [Online]. Dostupné z: https://ojs-demo.upce.cz/index.php/perner/article/view/635