WASET
    Hadi Seyedarabi and  Ali Aghagolzadeh and  Sohrab Khanmohammadi,  Facial Expressions Animation and Lip Tracking Using Facial Characteristic Points and Deformable Model.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    December 2007, vol. 12(12). 4134 - 4137
    [viewed 28 March 2024]. Available from: https://publications.waset.org/pdf/14909.