1. R. Komanduri, D.A. Lucca and Y. Tani: Annals of the CIRP, Vol. 46 (1997), p.545.
2. I. Kataoka: JSPE, Vol. 64 (1998), p.983.
3. T. Kurobe, Y. Yamada, N. Sakai, S. Ueda and K. Singu: JSPE, Vol. 60 (1994), p.1642.
4. H. Susuki, S. Hara and H. Matsunaga: JSPE, Vol. 59 (1993), p.131.