Šebjan, Urban, Polona Tominc, and Karin Širec. “Multiple Conceptual Modelling of Perceived Quality of In-Flight Airline Services”. Promet - Traffic&Transportation 29, no. 3 (June 27, 2017): 311-319. Accessed April 20, 2024. http://traffic.fpz.hr/index.php/PROMTT/article/view/2195.