Triangulation of irregularly spaced data
Fortran code by R. J. Renka. R functions by Albrecht Gebhardt
<albrecht.gebhardt@uni-klu.ac.at>. With contributions from
Stephen Eglen <stephen@anc.ed.ac.uk>, Sergei Zuyev
<sergei@stams.strath.ac.uk> and Denis White
<white.denis@epamail.epa.gov>
A constrained two-dimensional Delaunay triangulation
package