Тимкович, Ірина Іванівна. “Historical and Legal Description of Concept «air Lines»”. Scientific works of Kyiv Aviation Institute. Series Law Journal "Air and Space Law" 4, no. 37 (December 25, 2015): 23–26. Accessed December 7, 2025. https://jrnl.nau.edu.ua/index.php/UV/article/view/9823.