1. Jefferson's Welding Encyclopedia;O'Brien,1997
2. New Developments in Advanced Welding;Ahmed,2005
3. Ultrasonic welding;Jones;Weld. J.,1956
4. J.B. Jones, W.C. Elmore, C.F. De Frisco, Method and apparatus employing vibratory energy for bonding metals, Aeroprojects Inc., Assignee, U.S. Patent, 2,946,119, (1960).
5. Ultrasonic welding of metals to non-metallic materials;Shigeo;Weld. J.,1968