1. M. Dawber, K. M. Rabe, and J. F. Scott, Rev. Mod. Phys. 77, 1083 (2005).
2. S. Ducharme, S. P. Palto, and V. M. Fridkin, in Ferroelectrics and Dielectrics Thin Film, Ed. by H. S. Nalwa (Academic, San Diego, California, United States, 2002).
3. K. S. Aleksandrov and B. V. Beznosikov, Perovskites: Present and Future (Variety of Parent Phases, Phase Transitions, Possibilities of Synthesis of New Compounds) (Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 2004) [in Russian].
4. E. V. Balashova, B. B. Krichevtsov, and V. V. Lemanov, J. Appl. Phys. 104, 126104 (2008).
5. E. V. Balashova, B. B. Krichevtsov, and V. V. Lemanov, Fiz. Tverd. Tela (St. Petersburg) 51(3), 525 (2009) [Phys. Solid State 51 (3), 560 (2009)].