Qandil, Samer Sayed, and Daniel G. König. “984: Some Letters to and by Gerbert d’Aurillac Dealing With ‘Arabic’ Mathematics and Astronomy”. Transmediterranean History 3, no. 1 (June 15, 2021). Accessed July 3, 2024. https://ojs.ub.uni-konstanz.de/transmed/index.php/tmh/article/view/63.