Kazumoto Tanaka and  Takayuki Fujino,  Multiplayer Game System for Therapeutic Exercise in Which Players with Different Athletic Abilities Can Participate on an Even Competitive Footing.   journal   = {International Journal of Humanities and Social Sciences}, [online]. World Academy of Science, Engineering and Technology.
    January 2015, vol. 97(1). 1 - 4
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10000074.