Vitu, Tomas, Bernando Joao Vitor Pimentel, A. Escudeiro, Albano Cavaleiro, and Tomas Polcar. 2013. “Zr-DLC Coatings - Analysis of the Friction and Wear Mechanisms”. International Conference on Plasma Surface Engineering 2 (13):132-35. https://doi.org/10.3384/wcc2.132-135.