-غضنفری، م .(1389)، “نظریه مجموعههای فازی”، دانشگاه علم و صنعت ایران.
-عطایی، م. (1389)،“تصمیمگیری چند معیاره فازی”، دانشگاه صنعتی شاهرود.
-Awasthi, A., Chauhan, S. S., Omrani, H., and Panahi, A. (2011), "A hybrid approach based on SERVQUAL and fuzzy TOPSIS for evaluating transportation service quality". Computers & Industrial Engineering, 61(3), pp. 637-646.
-Celik, E., Bilisik, O. N., Erdogan, M., Gumus, A. T., and Baracli, H. (2013), “An integrated novel interval type-2 fuzzy MCDM method to improve customer satisfaction in public transportation for Istanbul”, Transportation Research Part E: Logistics and Transportation Review, 58,
-Chow, C. K. W. (2014). "Customer satisfaction and service quality in the Chinese airline industr”, Journal of Air Transport Management, 35, pp. 102-107.
-Eboli, L., andMazzulla, G. (2009), "A new customer satisfaction index for evaluating transit service quality", Journal of Public Transportation, Vol. 12, NO. 3, pp. 21-37.
-Fick, G. R., & Ritchie, J. B. (1991), "Measuring service quality in the travel and tourism industry", Journal of Travel Research, Vol. 30, NO.2, pp. 2-9.
-Kuo, M. S. (2011), “A novel interval-valued fuzzy MCDM method for improving airlines’ service quality in Chinese cross-strait airlines”. Transportation Research Part E: Logistics and Transportation Review, Vol. 47, No.6,
-Liou, J. J., Hsu, C. C., & Chen, Y. S. (2014). “Improving transportation service quality based on information fusion.” Transportation Research Part A: Policy and Practice, 67,
-Liu, C. H., Tzeng, G. H., Lee, M. H., & Lee, P. Y. (2013), “Improving metro–airport connection service for tourism development: Using hybrid MCDM models”. Tourism Management Perspectives, 6, pp. 95-107.
-Liu, C. H., Tzeng, G. H., Lee, M. H., and Lee, P. Y. (2013), "Improving metro–airport connection service for tourism development: Using hybrid MCDM models" Tourism Management Perspectives, 6, pp. 95-107.
-Munzilah, M. R., Wijeyesekera, D. C., and Ahmad Tarmizi, A. K. (2012), “Bus operation, quality service and the role of bus provider and driver”.
-Nathanail, E. (2008), “Measuring the quality of service for passengers on the hellenic railways”. Transportation Research Part A: Policy and Practice, Vol. 42, No.1, pp. 48-66.
-Parasuraman, A., Zeithaml, V. A., and Berry, L. L. (1994), " Alternative scales for measuring service quality: a comparative assessment based on psychometric and diagnostic criteria". Journal of retailing, Vol. 70, No.3, pp. 201-230.
-Shi, Y., & Yang, X. (2013), “The public transportation system of high quality in Taiwan.”, In Autonomous Decentralized Systems (ISADS), 2013 IEEE Eleventh International Symposium on pp. 1-6. IEEE.
-Suki, N. M. (2014), “Passenger satisfaction with airline service quality in Malaysia: “A structural equation modeling approach”, Research in Transportation Business & Management, 10, pp. 26-32.
-Torlak, G., Sevkli, M., Sanal, M., & Zaim, S. (2011), “Analyzing business competition by using fuzzy TOPSIS method: An example of Turkish domestic airline industry.” Expert Systems with Applications, Vol.38, No.4,
-Tsaur, S. H., Chang, T. Y., and Yen, C. H. (2002), "The evaluation of airline service quality by fuzzy MCDM". Tourism management, Vol. 23, No.2, pp. 107-115.
-Yeh, C. H., Deng, H., & Chang, Y. H. (2000), "Fuzzy multicriteria analysis for performance evaluation of bus companies", European Journal of Operational Research, Vol. 126, NO. 3, pp. 459-473.
-Zadeh, L. A. (1965), nxZ. “Information and Control”, 8, pp.338-353.