Chowla, S. ā€œA Remarkable Solution of the Pel1an Equation X<sup>2</sup>-py<sup>2</sup> = -4, in the Case When p=1 |(4)| and the Class-Number of R(&#8730;P) Is Iā€. The Journal of the Indian Mathematical Society 25, no. 1 (March 1, 1961): 43ā€“46. Accessed November 8, 2024. https://informaticsjournals.co.in/index.php/jims/article/view/16894.