http://gamma.cs.unc.edu/CSG/boole.html
ftp://ftp.cs.unc.edu/pub/projects/boole/boole-1.1.tar.gz
http://gamma.cs.unc.edu/CSG/BOOLE-DOCS
ftp://ftp.cs.unc.edu/pub/projects/boole/trim.gz
ftp://ftp.cs.unc.edu/pub/projects/boole/boole-1.0.tar.gz
ftp://ftp.cs.unc.edu/pub/users/manocha/CODE/INTERSECT/
ftp://ftp.cs.unc.edu/pub/users/manocha/PAPERS/INTERSECT/
https://wwwx.cs.unc.edu/~geom/papers/documents/dissertations/keyser00.pdf
http://www.smlib.com/white%20papers/nurbsatboeing.htm
http://www.smlib.com/white%20papers/nurbsatsdrc.htm
http://web.archive.org/web/20010307023022/http://www.geomware.com/web100.htm
http://www.smlib.com/
Evaluation of Boolean operations between free-form solids using extended simplicial chains and PN triangles
http://research.cs.tamu.edu/keyser/Papers/Perturb-SM2004.pdf
http://ariel.chronotext.org/dd/defigueiredo93adaptive.pdf