WASET
    Xingyu Pan and  Laure Tougne,  Topology-Based Character Recognition Method for Coin Date Detection.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2016, vol. 118(10). 1833 - 1838
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10005612.