Saad Jasim, Hala, thaer abed halo, and Motea Al jbouri. “A Study of Essential Components of Three Types of Bituminous Materials in Mishraq Sulfur Mine”. Journal of Education and Science 29, no. 3 (September 1, 2020): 119–129. Accessed September 10, 2025. https://edusj.uomosul.edu.iq/index.php/edusj/article/view/42172.