Malik, Toseef Ahmed. “The Generalized Quantum Difference Operator in $c$ and $c_0$ and Their Duals”. Sarajevo Journal of Mathematics 21, no. 1 (September 5, 2025): 125–135. Accessed January 26, 2026. https://www.sjm.anubih.ba/index.php/sjm/article/view/594.