M. Omer, Ashgan, and Mohammed Elfadil. “Preprocessing of Digital Mammogram Image Based on Otsu’s Threshold”. American Scientific Research Journal for Engineering, Technology, and Sciences 37, no. 1 (November 3, 2017): 220–229. Accessed April 28, 2024. https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/3476.