Tim Dunne and  Weicheng Li and  Chris Cheng and  Qi Peng,  Development of an Impregnated Diamond Bit with an Improved Rate of Penetration.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2022, vol. 191(11). 98 - 102
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10012769.