WASET
    M. Sankari and  C. Meena,  Enhanced Approaches to Rectify the Noise, Illumination and Shadow Artifacts.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2013, vol. 82(10). 1364 - 1372
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/9997167.