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2. Baur, W.H. (1971), The prediction of bond length variations in silicon-oxygen bonds. Amer. Mineral., 56, 1573-1599.
3. Clark, J.R., Appleman, D.E. and Papike, J.J. (1969), Crystal-chemical characterization of clinopyroxenes based on eight new structure refinements. Mineral. Soc. Amer. Spec. Pap., 2, 31-50.
4. Fukunaga, O., Yamaoka, S., Endo, T., Akaishi, M. and Kanda, H. (1979), Modification of belt-like high pressure apparatus. High-pressure Sci. Technol., 1, 846-852.
5. Grotepass, M., Behruzi, M. and Hahn, T. (1983), Strukturen, polymorphie and mischkristallbildung im syatem LiScSi2O6-LiInSi2O6-LiScGe2O6-LiInGe2O6. Z. Krist., 162, 90-91. Individual values are from private comunication.