ANTÚNEZ, H.J. Non-Unique Numerical Solutions in Visco-Plasticity. Engineering Transactions, [S. l.], v. 40, n. 4, p. 525–536, 1992. Disponível em: http://et.ippt.gov.pl/index.php/et/article/view/1610. Acesso em: 17 jan. 2026.