ANDREAUS, U.; CASINI, P.; VESTRONI, F. Frequency Reduction in Elastic Beams Due to a Stable Crack: Numerical Results Compared with Measured Test Data. Engineering Transactions, [S. l.], v. 51, n. 1, p. 87–101, 2015. Disponível em: https://et3.ippt.pan.pl/index.php/et/article/view/502. Acesso em: 24 apr. 2025.