Possibilities of application PVD coating nACRo4 deposited on high contact ration gearing in interaction with the conventional and eco-friendly lubricant / Adam Fűrstenzeller, František Tóth, Milan Kadnár. -- ilustr. -- Bibliografické odkazy. In: The journal of mechanical and energy engineering. -- ISSN 2544-0780. -- Vol. 2 (42), no. 3 (2018), s. 169-174. hydrostatické prevody * high contact ratio (HCR) * mazanie * nátery