Naveen Beri and  S. Maheshwari and  C. Sharma and  Anil Kumar,  Performance Evaluation of Powder Metallurgy Electrode in Electrical Discharge Machining of AISI D2 Steel Using Taguchi Method.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2008, vol. 14(2). 225 - 229
    [viewed 18 October 2019]. Available from: https://publications.waset.org/pdf/40.