KRAPKO, O. FORMATION OF THE AIRLINE ALLIANCES. Proceedings of National Aviation University, [S. l.], v. 66, n. 1, p. 57–60, 2016. DOI: 10.18372/2306-1472.66.9934. Disponível em: https://jrnl.nau.edu.ua/index.php/visnik/article/view/9934. Acesso em: 3 may. 2024.