M. Arockia Jaswin and D. Mohan Lal, Impact Behavior of Cryogenically Treated En 52 and 21-4N Valve Steels. journal = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology. January 2014, vol. 85(1). 159 - 164 [viewed 23 September 2024]. Available from: https://publications.waset.org/pdf/9997440.