5Li Qian, Mohammad Robiul Hossan. Effect on cutting force in turning hardened tool steels with cubic boron nitride inserts. Journal of Materials Processing Technology, 2007, 191 : 274-278
6X L Liu, D H Wen, Z J Li, et al. Cutting temperature and tool wear of hard turning hardened bearing steel. Journal of Materials Processing Technology, 2002,129: 200 - 206