Daife, Abdelali, and Elhoussine Azroul. “Strongly Quasilinear Elliptic Systems With Perturbations through Yong Measures”. Gulf Journal of Mathematics 17, no. 2 (September 3, 2024): 91-114. Accessed February 9, 2025. https://gjom.org/index.php/gjom/article/view/1907.