R. Suresh and  Pavan Kumar Nimmagadda and  Ming Zo Tan and  Shane Hart and  Sharp Ugwuocha,  An Automated Approach to the Nozzle Configuration of Polycrystalline Diamond Compact Drill Bits for Effective Cuttings Removal.   journal   = {International Journal of Geotechnical and Geological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2018, vol. 142(10). 632 - 639
    [viewed 21 November 2019]. Available from: https://publications.waset.org/pdf/10009680.