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 2025 Dec. 6];6(1):107-32. Available from: https://www.global-sci.com/index.php/jnma/article/view/13725