WASET
    Mahmoud A. Hassan and  Mohammed A. Khalili,  Self Watermarking based on Visual Cryptography.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2007, vol. 8(8). 2548 - 2551
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/12997.