TAGHAVI, M.; SHAHROKHI-DEHKORDI, M. S. The existence of multiple topologically distinct solutions to $\sigma_{2,p}$-energy. Topological Methods in Nonlinear Analysis, [S. l.], v. 62, n. 2, p. 409–429, 2023. DOI: 10.12775/TMNA.2023.010. Disponível em: https://apcz.umk.pl/TMNA/article/view/47710. Acesso em: 3 jul. 2024.