Ahmed Al-Badrani, O., رزکار, R. Abdulkarim Abdula, and عمر. “Stratigraphical Position of Piran Limestone Unit in Piran Area, Erbil Governorate, Kurdistan Region, Iraq: Insights from Occurrence of Calcareous Nannofossils”. Iraqi National Journal of Earth Science (INJES), vol. 23, no. 2, June 2025, pp. 37-46, doi:10.33899/earth.2023.138635.1049.