TRAPEZON, K.; TRAPEZON , A. Analytical study of the natural bending oscillations of a concave beam with parabolic change in thickness . Eastern-European Journal of Enterprise Technologies, [S. l.], v. 3, n. 7 (111), p. 15–23, 2021. DOI: 10.15587/1729-4061.2021.230820. Disponível em: https://journals.uran.ua/eejet/article/view/230820. Acesso em: 24 dec. 2024.