BEREANU, C.; GHEORGHE, D. Topological methods for boundary value problems involving discrete vector $\phi$-Laplacians. Topological Methods in Nonlinear Analysis, [S. l.], v. 38, n. 2, p. 265–276, 2011. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2011.032. Acesso em: 12 dec. 2024.