Sichiangha, Aruntida, and Piyanut Puangjumpa. “Solutions of the Pell equation x2-Dy2=+-N”. Progress in Applied Science and Technology 12, no. 3 (November 8, 2022): 7–14. accessed April 8, 2025. https://ph02.tci-thaijo.org/index.php/past/article/view/247113.