“ Studying of the solvability of the equations X^2-ΔY^2=-3 وَaX^2+2bXY-3aY^2=±1”, مجلة العلوم الأساسية, vol. 34, no. 1, Aug. 2021, Accessed: Jun. 18, 2026. [Online]. Available: https://journal.damascusuniversity.edu.sy/index.php/basj/article/view/1236