Ramadhan, Dilovan S., and Hasan S. M. Al-Khaffaf. “Symbol Spotting in Electronic Images Using Morphological Filters and Hough Transform”. Science Journal of University of Zakho 10, no. 3 (August 24, 2022): 119–129. Accessed November 22, 2024. https://sjuoz.uoz.edu.krd/index.php/sjuoz/article/view/874.