CHANG, Kung Ching; LI, Shujie; LIU, Jiaquan. Remarks on multiple solutions for asymptotically linear elliptic boundary value problems. Topological Methods in Nonlinear Analysis, [S. l.], v. 3, n. 1, p. 179–187, 1994. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.1994.008. Acesso em: 8 jul. 2025.