References
- Brown , A. and Rundquist , S. 1965 . Acta crystallogr. B , 19 : 684
- Brunner , J. , Thuler , M. , Vepřek , S. and Wild , R. 1979 . J. Phys. Chem. Solids , 40 : 967
- Cromer , D. T. and Mann , J. B. 1967 . J. chem. Phys. , 47 : 1832
- Davis , E. A. , Elliott , S. R. , Greaves , G. N. and Jones , D. P. 1977 . The Structure of Non-Crystalline Materials , Edited by: Gaskell , P. H. 205 London : Taylor & Francis Ltd .
- Guinier , A. 1963 . X-Ray Diffraction , San Francisco : W. F. Freeman and Co. .
- Hoseman , R. , Lemm , K. and Krebs , H. 1964 . Z. phys. Chem. neue Folge , 41 : 121
- Hultgren , R. , Gingrich , N. S. and Warren , B. E. 1935 . J. chem. Phys. , 3 : 351
- Jamieson , J. C. 1963 . Science, N.Y. , 139 : 1291
- Krebs , H. 1968 . Grundzüge der anorganischen Kristallchemie , Stuttgart : Ferdinand Enke Verlag .
- Krebs , H. and Grixber , H. U. 1967 . Z. Naturf. (a) , 22 : 96
- Lannin , J. S. and Shanabrook , B. V. 1978 . Solid. St. Commun , 28 : 497
- Shanabrook , B. V. and Lannin , J. S. 1979 . Physics of Semiconductors 1978 , Inst. Phys. Conf. Ser. No. 43 Edited by: Wilson , B. L. H. 713 London , Bristol : The Institute of Physics .
- Spear , W. E. , Le Comber , P. G. , Vepřek , S. and Wild , R. 1978 . Phil. Mag. B , 38 : 349
- Thurn , H. and Krebs , H. 1969 . Acta crystallogr. B , 25 : 125
- Veprek , S. 1972 . J. Crystal Growth , 17 : 101
- Boschke , F. , ed. 1975 . Topics in Current Chemistry , Vol. 56 , 140 Berlin : Springer-Verlag .
- 1976 . J. pure appl. Chem. , 48 : 163
- Veprek , S. and Oswald , H. R. 1975 . Z. anorg. allg. Chemie , 412 : 190
- Von Schnering , H. G. 1977 . Homoatomic Rings, Chains and Macromolecules of Main-Group Elements , Edited by: Rheingold , A. L. 317 Amsterdam : Elsevier .
- Warren , B. E. 1969 . X-Ray Diffraction , Reading , Massachusetts : Addison-Wesley .
- Waser , J. and Schomaker , V. 1953 . Rev. mod. Phys. , 25 : 617
- Wild , R. 1979 . Ph. D. Thesis University of Zürich .
- Wild , R. , Deiss , E. , Hertz , J. and Veprek , S. 1980 . to be published