1. 1)JWS : Yousetsu-Kougaku-no-Kiso, Maruzen, (1982). (in Japanese)
2. 2)Japan Friction Welding Association : Friction Welding, CORONA Publishing Co., LTD., 6-8. (in Japanese)
3. 4)Y. Itoh and T. Shindoh : Strength Characteristics of Copper/Aluminum Alloy Friction Welded Joint, Journal of the JFWA 5-3(1999). (in Japanese)