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2. L.C. Sengupta, E. Ngo, M.E. O’Day, S. Stowell, R. Lanco, ISAF’94. Proceedings of the Ninth IEEE International Symposium on Applications of Ferroelectric, 1994, pp. 622.
3. Dielectric characteristics of doped Ba1 − xSrxTiO3 at the paraelectric state