Muhyadeen, Samir Hashim, and Revink A. Ramadhan. “Outdoor Air Contaminants-Heavy Metals and Associated Health Risks in Duhok-Iraq”. Science Journal of University of Zakho 11, no. 1 (January 30, 2023): 78–83. Accessed July 25, 2024. https://sjuoz.uoz.edu.krd/index.php/sjuoz/article/view/1043.