Peter Jurči and  Jana Ptačinová and  Mária Hudáková and  Mária Dománková and  Martin Kusý and  Martin Sahul,  Simultaneous Improvement of Wear Performance and Toughness of Ledeburitic Tool Steels by  Sub-Zero Treatment.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2018, vol. 138(6). 274 - 282
    [viewed 11 July 2020]. Available from: https://publications.waset.org/pdf/10009081.