Pogrebnjak, A. D., Ponomarev, A. G., Kaverin, M. V., Kolesnikov, D. A., Beresnev, V. M., Komarov, F., & Mel’nik, S. S. (2013). The formation of superhard coatings = 48 GPa in Ti-Hf-N (Fe) and analysis of their structure and properties. International Conference on Plasma Surface Engineering, 2(13), 475–478. https://doi.org/10.3384/wcc2.475-478