John S. Anagnostopoulos and  Dimitrios E. Papantonis,  Flow Modeling and Runner Design Optimization in Turgo Water Turbines .   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2007, vol. 4(4). 183 - 188
    [viewed 28 January 2020]. Available from: https://publications.waset.org/pdf/9499.