Miguel A. Otaduy Daniel Germann Stephane Redon Markus H. Gross Adaptive deformations with fast tight bounds. 181-190 2007 conf/sca/2007 Symposium on Computer Animation http://doi.acm.org/10.1145/1272690.1272715 db/conf/sca/sca2007.html#OtaduyGRG07