HOANG THAT TON, L. Approximation of the buckling load in functionally graded beams with two types of porous distribution. International Journal of Engineering and Applied Physics, [S. l.], v. 3, n. 1, p. 595–599, 2023. Disponível em: https://ijeap.org/ijeap/article/view/107. Acesso em: 25 apr. 2024.