Existence of Three Weak Solutions for a Class of Quasi-Linear Elliptic Operators with a Mixed Boundary Value Problem Containing $p(·)$-Laplacian in a Variable Exponent Sobolev Space. JNMA [Internet]. 2024 Mar. 19 [cited 2026 Mar. 4];6(1):107-32. Available from: https://global-sci.com/jnma/article/view/13725