References
- 50 – 950 . Wroclaw, Poland : Institute of Low Temperature and Structure Research of the Polish Academy of Sciences pl. Katedralny . *
- Futama , H. 1970 . J. Phys. Soc. Japan , 28 : Suppl. 295 – 297 .
- Tanisaki , S. and Nakamura , N. 1970 . J. Phys. Soc. Japan , 28 : Suppl. 290 – 292 .
- Zúñiga , F. J. , Madariaga , G. , Paciorek , W. A. , Pérez-Mato , J. M. , Ezpeleta , J. M. and Etxebarria , I. 1989 . Acta Cryst. B , to be published
- McKenzie , D. R. 1975 . J. Phys. C: Solid State Phys. , 8 : 1607 – 1619 .
- Pérez-Mato , J. M. , Madariaga , G. and Tello , M. J. 1984 . Ferroelectrics , 53 : 293 – 296 .
- Simonson , T. , Denoyer , F. and Currat , R. 1985 . J. Physique , 46 : 2187 – 2195 .
- Simonson , T. , Denoyer , F. , Currat , R. and Vettier , C. 1988 . J. Physique , 49 : 471 – 480 .
- Gao , Y. , Gajhede , M. , Mallinson , P. , Petricek , V. and Coppens , P. 1988 . Phys. Rev. , 37 : 1825 – 1831 .
- Yamamoto , A. 1980 . Phys. Rev B , 22 : 373 – 379 .
- Takahashi , I. , Onodera , A. and Shiozaki , Y. 1987 . Phys. Rev. B. , 36 : 7008 – 7012 .
- Takahashi , I. , Onodera , A. and Shiozaki , Y. 1988 . J. Phys. C: Solid State Phys. , 21 : 5699 – 5706 .
- Tanisaki , S. and Mashiyama , H. 1988 . Acta Cryst. B , 44 : 441 – 445 .
- Pérez-Mato , J. M. and Madariaga , G. 1987 . J. Physique , 48 : 2019 – 2021 .
- Simonson , T. , Denoyer , F. and Currat , R. 1987 . J. Physique , 48 : 2023 – 2026 .
- Levanyuk , A. P. 1986 . Incommensurate Phases in Dielectrics. Fundamentals Edited by: Blinc , R. and Levanyuk , A. P. pp 1 – 41 . Amsterdam, , North-Holland
- Axe , J. D. 1980 . Phys. Rev. B , 21 : 4181
- Garcia , A. , Pérez-Mato , J. M. and Madariaga , G. 1989 . Phys. Rev. B , 39 : 2476 – 2483 .
- Dénoyer , F. and Currat , R. 1986 . Incommensurate phases in Dielectrics. Materials Edited by: Blinc , R. and Levanyuk , A. P. pp. 129 – 160 . Amsterdam, , North-Holland
- Pérez-Mato , J. M. , Madariaga , G. , Zúñiga , F. J. and Garcia-Arribas , A. 1987 . Acta Cryst. A , 43 : 216 – 226 .
- Yamamoto , A. 1982 . Acta Cryst. A , 38 : 87 – 92 .