Ayed E. Hashoosh, Mohsen Alimohammady, and Ghufran A. Almusawi. “Existence Results for Nonlinear Quasi-Hemivariational Inequality Systems”. University of Thi-Qar Journal 11, no. 4 (April 22, 2019): 90–109. Accessed October 9, 2025. https://jutq.utq.edu.iq/index.php/main/article/view/65.