References
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- Konstantinov , G. M. and Kupriyanov , M. F. 1990 . Proceed, of Intern. Conf. on Elec. Ceramics . 1990 , Riga, Latvia. pp. 114 – 115 . Part 1
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- Fesenko , E. G. , Dantsiger , Ya. A. and Razumovskaya , O. N. New Piezoceramic Materials , 160 Rostov-on-Don : Rostov University . (in Russian)
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- Prisedsky , V. V. 1987 . Proceed, of the Conf. on Ferroelectrics . 1987 , Moscow, USSR. pp. 152 (in Russian)