Khanh Du, Dao, and Nguyen Van Them. 1999. “UPGRADING THE WEAR RESISTANCE OF SLIDING GUIDES OF ENGINE LATHE BY INDUCTION HARDENING (HIGH - FREQUENCY ALTERNATING CURRENT)”. Science and Technology Development Journal 2 (9), 50-55. https://doi.org/https://doi.org/10.32508/stdj.v2i9.3679.