Yu-Ta Shen and  Yean-Ren Hwang,  Development of a Novel Pneumatic Hybrid Engine.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2012, vol. 65(5). 1030 - 1033
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/15257.