Benboubker, M. B., H. Chrayteh, H. Hjiaj, and C. Yazough. “Existence of Solutions in the Sense of Distributions of Anisotropic Nonlinear Elliptic Equations With Variable Exponent”. Topological Methods in Nonlinear Analysis, vol. 46, no. 2, Dec. 2015, pp. 665-94, doi:10.12775/TMNA.2015.063.