CANDELA, Anna Maria; DE MEDEIROS, Everaldo Souto; PALMIERI, Giuliana; PERERA, Kanishka. Weak solutions of quasilinear elliptic eystems via the cohomological index. Topological Methods in Nonlinear Analysis, [S. l.], v. 36, n. 1, p. 1–18, 2010. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2010.024. Acesso em: 8 jul. 2025.