БОРОДІН, В. Flexible search method in online databases. Proceedings of National Aviation University, [S. l.], v. 37, n. 4, p. 118–120, 2008. DOI: 10.18372/2306-1472.37.1645. Disponível em: https://jrnl.nau.edu.ua/index.php/visnik/article/view/1645. Acesso em: 27 apr. 2024.