VILAS, Howard K.; SURTEES, John O. Analysis of Knee-Braced Portal Frames for Vertical Loading: Part 1. Engineering Journal, [S. l.], v. 20, n. 4, p. 181–184, 1983. DOI: 10.62913/engj.v20i4.399. Disponível em: https://ej.aisc.org/index.php/engj/article/view/399. Acesso em: 9 oct. 2024.