Chatcai Tangsri and  Onjaree Na-Takuatoong,  Knowledge Transformation Flow (KTF) of Visually Impaired Students: The Virtual Knowledge System as a New Service Innovation.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2013, vol. 84(12). 3194 - 3197
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/9996888.