D. H. Park and  Y. H. Tak and  H. H. Kwon and  G. J. Kwon and  H. G. Kim,  The Optimization of Engine Mounting Parts Using Hot-Cold Forging Technology.   journal   = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2016, vol. 112(4). 785 - 788
    [viewed 23 September 2020]. Available from: https://publications.waset.org/pdf/10004438.