COSTEA, N.; VARGA, C. Systems of nonlinear hemivariational inequalities and applications. Topological Methods in Nonlinear Analysis, [S. l.], v. 41, n. 1, p. 39–65, 2013. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2013.002. Acesso em: 10 dec. 2024.