C, J., W. Aperador, and Y. Aguilar. “Tribological Performance Evidence on Ternary and Quaternary Nitride Coatings Applied for Industrial Steel”. Revista Mexicana De Física, vol. 59, no. 4, Jan. 2013, pp. 364-0, https://rmf.smf.mx/ojs/index.php/rmf/article/view/4012.