QIAN, X. Multiplicity of positive solutions for a Kirchhoff type problem without asymptotic conditions. Topological Methods in Nonlinear Analysis, [S. l.], v. 61, n. 2, p. 681–700, 2023. DOI: 10.12775/TMNA.2022.031. Disponível em: https://apcz.umk.pl/TMNA/article/view/44692. Acesso em: 22 lip. 2024.