Imran, M. , Masood, S. , Brandt, M. , Bhattacharya, S. , Mazumder, J. (2011), 'Parametric Investigation of Diode and CO2 Laser in Direct Metal Deposition of H13 Tool Steel on Copper Substrate', World Academy of Science, Engineering and Technology, Open Science Index 55, International Journal of Mechanical and Mechatronics Engineering, 5(7), 1524 - 1529.