Joska, Zdeněk, Zdeněk Pokorný, Jaromír Kadlec, Zbyněk Studený, and Emil Svoboda. 2020. “HARDNESS OF NITRIDED LAYERS TREATED BY PLASMA NITRIDING”. Acta Polytechnica CTU Proceedings 27 (June):53-56. https://doi.org/10.14311/APP.2020.27.0053.