HOANG THAT TON, L. Mode shapes for free vibration of clamped plates with various geometries based on an quadrilateral element. International Journal of Engineering and Applied Physics, [S. l.], v. 5, n. 2, p. 1179–1183, 2025. Disponível em: https://ijeap.org/ijeap/article/view/263. Acesso em: 15 jul. 2025.