KUSHMAN, Robert L.; GEER, Elihu. Stresses and Displacements in Three-Dimensional Trusses. Engineering Journal, [S. l.], v. 3, n. 2, p. 80–85, 1966. DOI: 10.62913/engj.v3i2.50. Disponível em: https://ej.aisc.org/index.php/engj/article/view/50. Acesso em: 9 oct. 2024.