VODIČKA, V. Drgania Swobodne Niejednorodnej Błony Pierścieniowej. Engineering Transactions, [S. l.], v. 10, n. 4, p. 667–675, 1962. Disponível em: https://et.ippt.pan.pl/index.php/et/article/view/2869. Acesso em: 8 oct. 2025.