1. 1) Hayashi, H.:J. Jpn. Soc. Technol. Plast., 58-673 (2017), 99-104.
2. 2) Keeler, S. and Kimchi, M. (Eds.):Advanced High-Strength Steels Application Guidelines Version 5.0, (2014), WorldAutoSteel.
3. 3) Urabe, T. and Hosoya, Y.:J. Jpn. Soc. Technol. Plast., 46-534 (2005), 560-564.
4. 4) Japan Sheet Metal Forming Research Group:Handbook of Ease or Difficulty in Press Forming Forth Edition, (2017), 311-360, Nikkan Kogyo Shimbun.
5. 5) Nakagawa, T. and Yoshida, K.:Reports of the Institute of Physical and Chemical Research, 44 (1968), 150-161.