Khachatryan, Gegham. “Application of the Concept of Low-Cost Airline in Air Transport”. Bulletin of Yerevan University G: Economics 12, no. 3 (36) (November 25, 2021): 3–21. Accessed November 22, 2024. https://pub.ysu.am/index.php/bulletin-ysu-economics/article/view/vol12_no3_2021_pp003-021.