# References

1. Blaney, J. M.; Dixon, J. S. "Distance Geometry in Molecular Modeling". Reviews in Computation Chemistry; VCH: New York, 1994.
2. Crippen, G. M. Distance Geometry and Conformational Calculations; Wiley: New York, 1981.
3. Rappé, A. K.; Casewit, C. J.; Colwell, K. S.; Goddard III, W. A.; Skiff, W. M. "UFF, a full periodic table force field for molecular mechanics and molecular dynamics simulations". J Am Chem Soc 1992, 114, 10024-10035.
4. Casewit, C. J.; Colwell, K. S.; Rappé, A. K. "Application of a universal force field to organic molecules". J Am Chem Soc 1992, 114, 10035-10046.
5. Heisterberg, D. J. "QTRFIT: a routine for quaternion alignment of molecules"; 1990, Ohio Supercomputer Center: http://www.ccl.net/cca/software/SOURCES/C/quaternion-mol-fit/index.shtml.

## Additional Notes

This software includes functionality from the Python Imaging Library (PIL), available at URL: http://www.pythonware.com/products/pil/index.htm

    The Python Imaging Library (PIL) is

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