1. Uchino K (2004) In: Proceedings of the international conference on smart materials-smart/intelligent materials and nanotechnology, p 67
2. Wiederick HD, Sherrit S, Mukherjee BK (1989) In: Second workshop on military robotic applications, p 214
3. APC International Ltd. (2001) Piezoelectric ceramics: principles and applications. APC International, Ltd, Mackeyville, PA
4. Damjanovic D (1998) Rep Prog Phys 61:1267
5. Safari A (1999) Mater Res Innovat 2:263