WASET
    P. J. Borkowski and  J. A. Borkowski,  Spatial Objects Shaping with High-Pressure Abrasive Water Jet Controlled By Virtual Image Luminance.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2013, vol. 75(3). 433 - 438
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/10761.