Mohammed Salih, Sarah Qahtan, and Abdul Sattar Arif Khammas. “Using GIMP and ShaderMap Tools As an Alternative Segmentation Method for Retinal Image Enhancement”. Borneo International Journal eISSN 2636-9826 2, no. 1 (October 12, 2019): 16-25. Accessed June 12, 2021. https://majmuah.com/journal/index.php/bij/article/view/35.