REFERENCES
- Smits , J. G. 1976 . “Iterative method for accurate determination of the real and imaginary parts of the materials coefficients of piezoelectric ceramics” . IEEE Trans Ultrason Ferroelec. and Freq. Control. , SU-23 : 393 – 402 .
- Kwok , K. W. , Chan , H. L. W. and Choy , C. L. 1997 . “Evaluation of the material parameters of piezoelectric materials by various methods” . IEEE Trans Ultrason Ferroelec. and Freq. Control. , 44 : 733 – 742 .
- San Emeterio , J. L. 1997 . “Determination of electromechanical coupling factors of low Q piezoelectric resonators operating in stiffened modes” . IEEE Trans on Ultrason Ferroelec. and Freq. Control , 44 : 108 – 113 .
- Goldberg , D. E. 1989 . Genetic Algorithms in Search, Optimization and Machine Learning , Canada : Addison-Wesley .