1. 1) T. Hara, M. Suzuki ; Kobe Steel Eng. Reports, 54, (1), 9 (2004).
2. 2) Y. Masago, K. Taira ; Kobe Steel Eng. Reports, 59, (1), 133 (2009).
3. 3) I. Buresch, J. Ganz, K. Kaspar ; 21. International Conference on Electrical Contacts, Zürich, (09/2002).
4. 4) T. Hara, M. Nishimura ; J. Jpn. Copper & Copper Alloys, 42, 179 (2003).
5. 5) H. Narieda, Y. Suzuki, Y. Inohana, A. Sugawara, T. Ozaki ; J. Jpn. Copper & Copper Alloys, 41, 214 (2008).