Rizos, Ioannis, and Nikolaos Gkrekas. “The Historical Background of a Famous Indeterminate Problem and Some Teaching Perspectives”. Journal of Mathematics and Statistics Studies 3, no. 1 (January 18, 2022): 01–08. Accessed November 30, 2025. https://al-kindipublishers.org/index.php/jmss/article/view/2690.