WASET
    Hossein Mirzaee and  Farhad Besharati ,  Remote-Sensing Sunspot Images to Obtain the Sunspot Roads .   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2007, vol. 3(3). 581 - 585
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/5635.