ЛУППО, О.; ЛАЗОРЕНКО, В. Analysis of air safety in the European system of air traffic. Proceedings of National Aviation University, [S. l.], v. 37, n. 4, p. 22–25, 2008. DOI: 10.18372/2306-1472.37.1626. Disponível em: https://jrnl.nau.edu.ua/index.php/visnik/article/view/1626. Acesso em: 8 feb. 2025.