KAJIKIYA, Ryuji. Non-radial solutions with orthogonal subgroup invariance for semilinear Dirichlet problems. Topological Methods in Nonlinear Analysis, [S. l.], v. 21, n. 1, p. 41–51, 2003. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2003.003. Acesso em: 3 jul. 2025.