Lae-Jeong Park and  Jung-Ho Moon,  Exploiting Global Self Similarity for Head-Shoulder Detection.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2013, vol. 76(4). 365 - 369
    [viewed 07 April 2020]. Available from: https://publications.waset.org/pdf/14935.