Pakdil, Fatma, and Feride Bahar Kurtulmuşoğlu. “Improving Service Quality in Highway Passenger Transportation: A Case Study Using Quality Function Deployment”. European Journal of Transport and Infrastructure Research 14, no. 4 (September 1, 2014). Accessed May 1, 2024. https://journals.open.tudelft.nl/ejtir/article/view/3043.