Links for pytron

pytron-0.1.tar.gz
http://dl.acm.org/citation.cfm?id=1390703
http://epubs.siam.org/doi/abs/10.1137/S1052623498345075
http://www.mcs.anl.gov/~more/tron/
http://www.mcs.anl.gov/~more/tron/