Kravtsov А. Г.; Zotov С. В. Human respiratory tract protection with the help of electret fiber filters. Chrezvychaynye situatsii: obrazovanie i nauka, [S. l.], v. 3, n. 1, p. 63–74, 2008. Disponível em: https://journals.ucp.by/index.php/gei/article/view/795. Acesso em: 22 jul. 2024.