WASET
    Yu-Xiang Zhao and  Chien-Hsing Chou and  Mu-Chun Su and  Yi-Zeng Hsieh,  Portable Virtual Piano Design.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2010, vol. 43(7). 1019 - 1022
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/11330.