Qiu Chen and  Koji Kotani and  Feifei Lee and  Tadahiro Ohmi,  An Improved Face Recognition Algorithm Using Histogram-Based Features in Spatial and Frequency Domains.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2016, vol. 110(2). 385 - 389
    [viewed 09 May 2024]. Available from: https://publications.waset.org/pdf/10003903.