Boukerch Haroun and  Luo Qing Sheng and  Li Hua Shi and  Boukraa Sebti,  Vision Based People Tracking System.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2019, vol. 155(11). 582 - 586
    [viewed 15 December 2019]. Available from: https://publications.waset.org/pdf/10010893.