Muhammad, Abd Al-Salam Gomaa, and Raad Hussein Najm Al-Hamdani. 2020. “The Military Campaigns of Emperor John Zemskis the First Against the Islamic Outposts in the Euphrates and the Levant”. Journal of Tikrit University for Humanities 27 (12):274-91. https://doi.org/10.25130/jtuh.27.12.2020.13.