DEMS, K.; KLEIBER, M. Physically and Geometrically Nonlinear Analysis of Structures Using One- and Two-Dimensional Finite Elements. Engineering Transactions, [S. l.], v. 24, n. 4, p. 771–786, 1976. Disponível em: http://et.ippt.gov.pl/index.php/et/article/view/2329. Acesso em: 17 jan. 2026.