CHEONG-SIAT-MOY, F. Stiffness Design of Unbraced Steel Frames. Engineering Journal, [S. l.], v. 13, n. 1, p. 8–10, 1976. DOI: 10.62913/engj.v13i1.257. Disponível em: https://ej.aisc.org/index.php/engj/article/view/257. Acesso em: 9 oct. 2024.