Nassir Hawas, G., A. Abed Ibrahim, and O. S. Al-Tamimi. “Evaluation of Radon Concentrations in The Soil of Kirkuk City”. Iraqi National Journal of Earth Science (INJES), vol. 24, no. 1, Jan. 2024, pp. 122-35, doi:10.33899/earth.2023.140762.1092.