KRISTÁLY, Alexandru; VARGA, Csaba. A set-valued approach to hemivariational inequalities. Topological Methods in Nonlinear Analysis, [S. l.], v. 24, n. 2, p. 297–307, 2004. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2004.029. Acesso em: 4 jul. 2025.