VARIATIONAL FORMULATIONS OF VIBRATION EQUATIONS OF SINUSOIDAL SHEAR DEFORMABLE  BEAMS AND EIGENFREQUENCY SOLUTIONS BY FINITE SINE TRANSFORM METHOD. Nigerian Journal of Technology, [S. l.], v. 43, n. 3, 2024. DOI: 10.4314/njt.v43i3.3. Disponível em: https://www.nijotech.com/index.php/nijotech/article/view/3701. Acesso em: 16 apr. 2026.