References
- Magomedova , N. S. and Zvonkova , Z. V. 1978 . Crystallographia(in Russian) , 23 : 281
- Magomedova , N. S. , Zvonkova , Z. V. , Neygauz , M. G. and Novakovskaya , L. A. 1980 . Crystallographia(in Russian) , 25 : 400
- Smirnov , E. A. and Podorolskaya , A. E. 1969 . Zh. Obshchey Khimii(in Russian) , 39 : 1373
- Silinsh , E. A. , Kurik , M. V. and Capek , V. 1988 . Electron Processes in Molecular Crystals. Localization and Polarization Effects , Riga : Zinatne .