H. Izakian and  S. A. Monadjemi and  B. Tork Ladani and  K. Zamanifar,  Multi-Font Farsi/Arabic Isolated Character Recognition Using Chain Codes.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2008, vol. 19(7). 2315 - 2318
    [viewed 23 January 2020]. Available from: https://publications.waset.org/pdf/301.