1. Su, W., Liu, H., Li, L., Chen, G.: Acta Scientiarum Naturalium Universitatis Jilinensis, Suppl. (Phys.)102, 188 (1992)
2. Allan, K., Campion, A., Zhou, J., Goodenough, J.B.: Phys. Rev. B41, 11572 (1990); Chinese, J. High Pressure Phys.6, (1) 7 (1992)
3. Zhou Jianshi: Chinese J. Low Temperature Phys.14, (6) 403 (1992)
4. Seifert, K.F.: Fortschr. Mineral.45, (2) 214 (1968)
5. Liu Hongjian and Su Wenhui: Chin. J. High Pressure Phys.4, (4) 284 (1990)