Jurči, P. , Ptačinová, J. , Hudáková, M. , Dománková, M. , Kusý, M. , Sahul, M.. "Simultaneous Improvement of Wear Performance and Toughness of Ledeburitic Tool Steels by Sub-Zero Treatment". World Academy of Science, Engineering and Technology, Open Science Index 138, International Journal of Materials and Metallurgical Engineering (2018), 12(6), 274 - 282.