Srinivasan Aruchamy and  Partha Bhattacharjee and  Goutam Sanyal,  Online Optic Disk Segmentation Using Fractals.   journal   = {International Journal of Biomedical and Biological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2015, vol. 99(3). 309 - 314
    [viewed 27 October 2021]. Available from: https://publications.waset.org/pdf/10002026.