Comparative study of the PVD coatings on the plasma nitrided steelSurženkov, Andrei; Põdra, Priit; Sergejev, Fjodor; Saarna, Mart; Adoberg, Eron; Mikli, Valdek; Viljus, Mart; Kulu, PriitMaterials science = Medžiagotyra2012 / p. 40-44 : ill https://matsc.ktu.lt/index.php/MatSc/article/view/1339 Cyclic loading of TiCN coating by Vickers indentationSaarna, Mart; Lind, Liina; Peetsalu, Priidu; Sergejev, FjodorEngineering materials and tribology XXV2017 / p. 425-429 http://dx.doi.org/10.4028/www.scientific.net/KEM.721.425