WASET
    Johan Fredin and  Anders Jönsson,  Experimentation on Piercing with Abrasive Waterjet.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2011, vol. 59(11). 2393 - 2399
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/3327.