KEFI, K. Multiple solutions for a $p(x)$-Laplacian-like problem under Neumann boundary condition. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 76, n. 8, p. 1158–1167, 2024. DOI: 10.3842/umzh.v76i8.7575. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/7575. Acesso em: 5 dec. 2025.