Studying of the solvability of the equations X^2-ΔY^2=-3 وَaX^2+2bXY-3aY^2=±1. Damascus University Journal for the basic sciences, [S. l.], v. 34, n. 1, 2021. Disponível em: https://journal.damascusuniversity.edu.sy/index.php/basj/article/view/1236. Acesso em: 18 jun. 2026.