Mahmood, Z., N. Ahmed, and N. Maaruf. “CT Angiographic Determination of Most Frequent Anatomic Variations of Coronary Arteries in Erbil Population”. Zanco Journal of Medical Sciences (Zanco J Med Sci), Vol. 23, no. 1, Apr. 2019, pp. 19-27, doi:10.15218/zjms.2019.003.