Mong Cam, Dinh, Nguyen Chi, Le Binh, Tran Tuan, Nguyen Hai Yen, and Tran Trung. 2007. “SYNTHESIS OF CrN HARD COATINGS BY SPUTTER ION PLATING”. Science and Technology Development Journal 10 (5), 13-20. https://doi.org/https://doi.org/10.32508/stdj.v10i5.2778.