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Acta Cryst. (1991). A47, 655-685


The STAR File process is the subject of a patent application by the International Union of Crystallography and S. R. Hall. The CIF specifications and Dictionary are the Copyright of the International Union of Crystallography. These decisions protect STAR File and/or CIF from use for commercial gain without prior permission, and reflect the involvement of the IUCr in supporting this development. STAR File and CIF may be used freely by individuals for their intended purposes, and for the preparation of deposition documents for non-IUCr journals. Requests to use STAR File and/or CIF for any other purpose should be addressed to: The Executive Secretary, International Union of Crystallography, 2 Abbey Square, Chester CH1 2HU, England.

The computer program source code for QUASAR and CYCLOPS, and the CIF Dictionary (Core Version 1991) in printed form, and as the electronic file cifdic.C91, are available from the Technical Editor, International Union of Crystallography, 5 Abbey Square, Chester CH1 2HU, England (email: teched@iucr.ac.uk).

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