References
- Cady , W. G. 1946 . Piezoelectricity , McGraw-Hill Book Company .
- Heising , R. A. 1946 . Quartz Crystals for Electrical Circuits , Van Nostrand .
- Mason , W. P. 1950 . Piezoelectric Crystals and Their Applications to Ultrasonics , Van Nostrand .
- Ikeda , T. 1990 . Fundamentals of Piezoelectricity , Oxford University Press .
- Bottom , V. E. 1982 . Introduction to Quartz Crystal Unit Design , Van Nostrand .
- Lukesh , J. S. and McCaa , D. G. 1947 . American Min. , 32 : 137
- Ernisse , E. P. 1976 . Proc. 30th Ann. Symp. Frequency Control , : 8 – 10 .