Stephen Karungaru and  Minoru Fukumi and  Norio Akamatsu,  Morphing Human Faces: Automatic Control Points Selection and Color Transition.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2007, vol. 1(1). 197 - 200
    [viewed 18 April 2024]. Available from: https://publications.waset.org/pdf/9733.