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* Structures *
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The files in this directory describe important cristalline structures.
They were prepared for Gamgi, by Carlos Pereira:
http://www.gamgi.org/

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* Bibliography *
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Structural data was obtained from:

1) Marc de Graef and Michael E. McHenry,
Structure of Materials, an Introduction to Crystallography,
Diffraction, and Symmetry, Cambridge University Press, 2007
http://som.web.cmu.edu/frames.html

Structural information was obtained from:

2) Yet-Ming Chiang, Dunbar Birnie III, W. David Kingery,
Physical Ceramics, Principles for Ceramic Science and
Engineering, John Wiley & Sons, The MIT series in
Materials Science & Engineering, 1997
