LUYEN, D. T. Picone’s identity for $\Delta_{\gamma}$-Laplace operator and its applications. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 73, n. 4, p. 515–522, 2021. DOI: 10.37863/umzh.v73i4.639. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/639. Acesso em: 7 apr. 2025.