AUCIELLO, N.M. A study of the Numerical Convergence of Rayleigh-Ritz Method for the Free Vibrations of Cantilever Beam of Variable Cross-Section with Tip Mass. Engineering Transactions, [S. l.], v. 44, n. 3-4, p. 375–388, 1996. Disponível em: https://et.ippt.pan.pl/index.php/et/article/view/1469. Acesso em: 25 jul. 2025.