Hussain, Shafiq, and Muhammad Faheem. “Separation of Veins and Arteries for Estimating Hypertensive Retinopathy in Fundus Images”. Biomedical Research and Therapy 3, no. 06 (June 26, 2016): 673-678. Accessed January 9, 2025. http://bmrat.com/index.php/BMRAT/article/view/101.