S.ALANSARI, Luay; M.HAL-HAJJAR, Ali; JAWAD A., Husam. Calculating the natural frequency of cantilever tapered beam using classical Rayleigh, modified Rayleigh and finite element methods. International Journal of Engineering and Technology, [S. l.], v. 7, n. 4, p. 4866–4872, 2019. DOI: 10.14419/ijet.v7i4.25334. Disponível em: https://mail.sciencepubco.com/index.php/IJET/article/view/25334.. Acesso em: 17 aug. 2025.