1. Kunst , H. Verschleißschutz—Ein Ratgeber für die Anwendung verschleißhemmender Schichten, Arbeitsgemeinschaft Wärmebeh-andlung and Werkstofftechnik (AWT) , Wiesbaden , 2000 .
2. Gorscak , D. ; Panjan , P. ; Curkovic , L. ; Kapudija , D. Mechanical properties and application of various PVD hard coatings in cold work tools. Proceedings of 7th International Tooling Conference , Turin , Italy , 2006 , 473 – 481 .
3. Comparison of mechanical properties of various PVD hard coatings for forming tools