1. Gorvat, A. A., Nakonechny, Yu. S. and Chepur, D. V. 1984.Semiconductors-Ferroelectrics, 26Rostov-on-Don: Rostov State Univ.
2. Bogomolov, A. A., Malyshkina, O. V., Solnyshkin, A. V., Raevsky, I. P., Protzenko, N. P. and Sandjiev, D. J. 1996.The 10thIntern. IEEE Symp. on the Applic. of Ferroelectrics East Brunswick NJ Rutgers Univ., PIII-7USA: NJ Rutgers Univ.
3. Fistool, V. I. 1975.Introduction to Semiconductor Physics, 295Moscow: Vyshaya Shkola.