1. M. E. Lines and A. M.Glass , Principles and Applications of Ferroelectrics and Related Materials , OUP , Oxford , 1977
2. B. Jaffe , W. R.Cook and H. L.Jaffe , Perovskite niobates and tantalates and other ferroelectric and antiferroelectric perovskites , Piezoelectric Ceramics , 1971 , ch. 8, pp. 185–212
3. Lead-free piezoelectrics—The environmental and regulatory issues
4. Applications of Piezoelectrics: Old and New
5. Dielectric Properties and Phase Transitions of NaNbO3and (Na,K)NbO3