ŻYCZKOWSKI, M.; CEGIELSKI, E. On the optimal design of viscoplastic bars under combined torsion with bending. Archives of Mechanics, Warsaw, Poland, v. 54, n. 5-6, p. 751–770, 2002. Disponível em: http://am.ippt.gov.pl/index.php/am/article/view/v54p751. Acesso em: 17 jan. 2026.