References

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Baylor University, http://www.baylor.edu/grass. GRASS Home Page, 1999.

2

BioMedware, Ann Arbor, MI. Gamma: Software for Statistical Inference with Spatial Data., 1999.

3

Department of Computer Science, Dartmouth College, http://www.cs.dartmouth.edu/gnuplot_info.html. Gnuplot Home Page, 1999.

4

R. Ihaka and R. Gentleman. R: A language for data analysis and graphics. Journal of Computational and Graphical Statistics, 5(3):299-314, 1996. http://lib.stat.cmu.edu/R/CRAN/.

5

G. Jacquez, A. Long, and M. Wilson. GeoMed Home Page. BioMedware, Inc. and The University of Michigan, http://www.sph.umich.edu/geomed/, 1999. Maintained by Andrew Long.

6

G. M. Jacquez. Stat! Statistical Software for the Clustering of Health Events. BioMedware, Ann Arbor, MI, 1994.