Adnan Abdul-Aziz Gutub and  Manal Mohammad Fattani,  A Novel Arabic Text Steganography Method Using Letter Points and Extensions .   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2007, vol. 3(3). 502 - 505
    [viewed 19 March 2024]. Available from: https://publications.waset.org/pdf/5745.