Tleukenov, Y.; Plotnikov, S.; Pogrebnjak, A.; Erdybaeva, N.; Manapbayeva, A. Microstructure, Elemental and Phase Composition and Physical-Mechanical Properties of Nanocomposite (Ti-Zr-Hf-V-Nb-Ta)N Coatings before and After Implantation of High Doses of Nitrogen Ions. Rec.Contr.Phys. 2018, 2017, 62-71.