1. 1) S. Asai: 129–130th, Nishiyama Memorial Seminar, ISIJ, Tokyo, 1, (1989), 4.
2. 2) M. Garnier: 3rd Int. Symp. on Electromagnetic Processing of Materials, ISIJ, Tokyo, (2000), 3.
3. 4) K. Umetsu, Y. Tomizawa and K. Myojin: Proc. EPM 2006, ISIJ, Tokyo, (2006), 485.
4. 5) Private communication.