Jane Tournois Camille Wormser Pierre Alliez Mathieu Desbrun Interleaving Delaunay refinement and optimization for practical isotropic tetrahedron mesh generation. 2009 28 ACM Trans. Graph. 3 http://doi.acm.org/10.1145/1531326.1531381 db/journals/tog/tog28.html#TournoisWAD09