LIU, Zhenhai; PAPAGEORGIOU, Nikolaos S. Singular anisotropic equations with a sign-changing perturbation. Nonlinear Analysis: Modelling and Control, [S. l.], v. 28, n. 6, p. 1120–1137, 2023. DOI: 10.15388/namc.2023.28.33472. Disponível em: https://www.zurnalai.vu.lt/nonlinear-analysis/article/view/33472. Acesso em: 16 jun. 2025.