SKRINAR, M.; UMEK, A. Changes in the Eigenpairs Due to the Structure Modification. The Continuous Approach. Engineering Transactions, [S. l.], v. 45, n. 2, p. 227–236, 1997. Disponível em: https://et.ippt.pan.pl/index.php/et/article/view/1422. Acesso em: 9 oct. 2025.