ABD EL FATTAH, E. FORTRAN PROGRAM FOR MODES OF VIBRATION OF STRUCTURES. Periodica Polytechnica Transportation Engineering, [S. l.], v. 8, n. 2, p. 153–160, 1980. Disponível em: https://pp.bme.hu/tr/article/view/6894. Acesso em: 23 dec. 2024.