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2. 2. Kallee, S., Nicholas, D. (1998) Causing a Stir in the Future. Welding and Joining, 2, 18-21.
3. Friction Stir Welding of Aluminum Alloy and Application to Structure;Okamura;Journal of Japan Institute of Light Metals,2000
4. 4. Mori, H., Noda, M., Tominaga, T. (2007) Current state on application of friction stir welding for rolling stock. Ibid., 11, 506-510.
5. 5. Kallee, S.W., Davenport, J., Nicholas, E.D. (2002) Railway Manufacturers Implement Friction Stir Welding. Welding J., 10, 47-50.