WASET
    Ali Salem Bin Samma and  Rosalina Abdul Salam,  Enhancement of Shape Description and Representation by Slope.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2009, vol. 32(8). 1918 - 1922
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/12249.