ДОНИК, Т. Defining the boundary of the plate, backed by two rectangular ribs. Proceedings of National Aviation University (archive), [S. l.], v. 31, n. 1, p. 185–188, 2007. DOI: 10.18372/2306-1472.31.1465. Disponível em: http://jrnl.kai.edu.ua/index.php/visnik/article/view/1465. Acesso em: 31 may. 2026.