WASET
    Zdenek Krnoul,  Effect of Visual Speech in Sign Speech Synthesis.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2009, vol. 31(7). 1671 - 1676
    [viewed 28 March 2024]. Available from: https://publications.waset.org/pdf/4362.