A. Mohammed, Farhad. “Pollution Caused by Vehicle Exhausts and Oil Trash Burning in Kirkuk City”. Iraqi National Journal of Earth Science (INJES) 9, no. 2 (December 1, 2009): 39–48. Accessed December 3, 2025. https://earth.uomosul.edu.iq/index.php/earth/article/view/40914.