FORYŚ, A.; KOWYNIA, J. Charitonov Theorem and Stability of Parametrically Excited Systems. Engineering Transactions, [S. l.], v. 48, n. 2, p. 99–118, 2015. DOI: 10.24423/engtrans.599.2000. Disponível em: https://et3.ippt.pan.pl/index.php/et/article/view/599. Acesso em: 10 jun. 2025.