BONANNO, G.; WINKERT, P. Multiplicity results to a class of variational-hemivariational inequalities. Topological Methods in Nonlinear Analysis, [S. l.], v. 43, n. 2, p. 493–516, 2016. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2014.029. Acesso em: 22 jul. 2024.