Gürol Önal and  Kevser Dincer,  Experimental Study of Performance of a Counter Flow Ranque-Hilsch Vortex Tube with Inner Threaded Body.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2013, vol. 80(8). 1706 - 1708
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/16207.