1. 1) T. W. D. Farley, S. Rogers and D. Nardini: Proc. of the Conf., Vibration in Rolling Mills, Institute of Materials, London, (2006).
2. 2) T. W. D. Farley, D. Nardini, S. Rogers and D. S. Wright: Proc. of TMS 2002, 131st Annual Int. Meeting, TMS, Warrendale, PA, USA, (2002).
3. 4) B. Son, Y. Roh and Y. Lee: Korean. Soc. Noise Vib. Eng., 4 (1994), 43.
4. 5) Y. X. Wu and J. A. Duan: J. Mater. Process. Technol., 129 (2002), 148.
5. 6) A. Bar and A. Swiatoniowski: J. Mater. Process. Technol., 155–156 (2004), 2116.