OUSBIKA, M.; ALLALI, Z. El. An eigenvalue of anisotropic discrete problem with three variable exponents. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 73, n. 6, p. 839–848, 2021. DOI: 10.37863/umzh.v73i6.860. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/860. Acesso em: 5 dec. 2025.