VILAS, Howard K.; SURTEES, John O. Analysis of Knee-braced Portal Frames for Vertical Loading: Part 2-Columns of Unequal Stiffness. Engineering Journal, [S. l.], v. 21, n. 4, p. 223–226, 1984. DOI: 10.62913/engj.v21i4.427. Disponível em: https://ej.aisc.org/index.php/engj/article/view/427. Acesso em: 9 oct. 2024.