БИССИУНИ, Р. А. Development of a model safety in Egypt. Proceedings of National Aviation University, [S. l.], v. 37, n. 4, p. 99–103, 2008. DOI: 10.18372/2306-1472.37.1642. Disponível em: https://jrnl.nau.edu.ua/index.php/visnik/article/view/1642. Acesso em: 30 jun. 2024.