1. E. G. Fesenko, V. G. Gavrilyachenko, A. F. Semenchev, and S. M. Yufatova, Fiz. Tverd. Tela (Leningrad) 27, 1194 (1985) [Sov. Phys. Solid State 27, 719 (1985)].
2. E. G. Fesenko, U. G. Gavrilyachenko, and A. F. Semenchev, Ferroelectrics 100, 195 (1989).
3. E. G. Fesenko, V. G. Gavrilyachenko, and A. F. Semenchev, Domain Structure of Multiaxial Ferroelectrics [in Russian], Rostov University, Rostov-on-the-Don, 1990.
4. A. V. Turik, A. I. Chernobabov, and V. Yu. Topolov, Fiz. Tverd. Tela (Leningrad) 25, 2839 (1983) [Sov. Phys. Solid State 25, 1640 (1983)].
5. A. V. Turik, A. I. Chernobabov, and V. Yu. Topolov, Fiz. Tverd. Tela (Leningrad) 26, 3618 (1984) [Sov. Phys. Solid State 26, 2176 (1984)].