M. Hamad Hassan and  S.A.M. Gilani,  A Semi-Fragile Signature based Scheme for Ownership Identification and Color Image Authentication.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2008, vol. 19(7). 2415 - 2418
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/8718.