Xi Yang and  Bulent Chavdar and  Alan Vonseggern and  Taylan Altan,  Prediction and Reduction of Cracking Issue in Precision Forging of Engine Valves Using Finite Element Method.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2015, vol. 98(2). 266 - 272
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/10000478.