Francis Avnaim Jean-Daniel Boissonnat Olivier Devillers Franco P. Preparata Mariette Yvinec Evaluation of a New Method to Compute Signs of Determinants. C16-C17 1995 Symposium on Computational Geometry http://doi.acm.org/10.1145/220279.220329 db/conf/compgeom/compgeom95.html#AvnaimBDPY95