KRAPKO, O. FORMATION OF THE AIRLINE ALLIANCES. Proceedings of National Aviation University (archive), [S. l.], v. 66, n. 1, p. 57–60, 2016. DOI: 10.18372/2306-1472.66.9934. Disponível em: http://jrnl.kai.edu.ua/index.php/visnik/article/view/9934. Acesso em: 14 jun. 2026.