References
- Smolensky , G. A. 1960 . Fiz. TV. Tela , 11 : 2982
- Sakata , K. and Masuda , Y. 1974 . Ferroelectrics , 7 : 347
- Isupov , V. A. 1984 . Ferroelectrics Letters , 2 : 205
- Vakhrushcv , S. B. 1985 . Ferroelectrics , 63 : 153
- Zhang , M. 1986 . Ferroelectrics Letters , 6 : 147
- Suchanicz , J. 1988 . Ferroelectrics , 77 : 107
- Roleder , K. 1989 . Ferroelectrics , 89 : 1
- Suchanicz , J. 1989 . KTB Ferroelcktrizitat , 88 : 186
- Emelianov , S. M. 1985 . Neorganicheskye Materialy , 21 : 839
- Suchanicz , J. and Ptak , W. S. 1990 . Ferroelectrics Letters , 12 : 71
- Zvirgizds , I. A. 1982 . Ferroelectrics , 40 : 75
- Suchanicz , J. and Ptak , W. S. 1991 . Izv. Akad. Nauk SSSR, Serya Fiz. , 55 : 555
- Suchanicz , J. and Kwapuliriski , J. to he published in Ferroelectrics.