Buckling of Steel Portal Frames Considering Material Non-Linearity. Diyala Journal of Engineering Sciences , [S. l.], v. 8, n. 2, p. 72–83, 2015. DOI: 10.24237/djes.2015.08206. Disponível em: https://www.djes.info/index.php/djes/article/view/313. Acesso em: 1 may. 2025.