SUKHOMLIN, N.; ALVAREZ, J. R. Symmetry and new solutions of the equation for vibrations of an elastic beam. Ingeniería y Ciencia, [S. l.], v. 5, n. 9, p. 25–43, 2009. Disponível em: https://publicaciones.eafit.edu.co/index.php/ingciencia/article/view/466. Acesso em: 29 mar. 2024.