МАЧАЛІН, І. Analysis and evaluation costs of the operator products of aircraft during the warranty. Proceedings of National Aviation University (archive), [S. l.], v. 33, n. 3-4, p. 85–89, 2007. DOI: 10.18372/2306-1472.33.1503. Disponível em: http://jrnl.kai.edu.ua/index.php/visnik/article/view/1503. Acesso em: 13 apr. 2026.