SARAN, M.; KLEIBER, M. A Note on the Perturbation Approach to Nonlinear Static Analysis of Elastic Plane Trusses. Engineering Transactions, [S. l.], v. 32, n. 3, p. 315–327, 1984. Disponível em: https://et.ippt.pan.pl/index.php/et/article/view/1899. Acesso em: 25 jul. 2025.