A. Mhmood, A., and B. I. Ado. “Factors of the Prosperity of the Scientific and Intellectual Movement in Khorasan and the Country Beyond the River During the Abbasid Era (247-447 Al-Hajri / 861-1055 A D)”. Adab Al-Rafidayn, vol. 49, no. 77, June 2019, pp. 251-78, doi:10.33899/radab.2019.164958.