ALTERNATIVE FIRST PRINCIPLE APPROACH FOR DETERMINATION OF ELEMENTS OF BEAM STIFFNESS MATRIX. Nigerian Journal of Technology, [S. l.], v. 32, n. 2, p. 152–158, 2013. DOI: 10.4314/njt.322.645. Disponível em: https://www.nijotech.com/index.php/nijotech/article/view/645. Acesso em: 18 oct. 2025.