Andrés Iglesias VII International Workshop on Computer Graphics and Geometric Modeling - CGGM'2008. 3-4 2008 ICCS (2) http://dx.doi.org/10.1007/978-3-540-69387-1_1 conf/iccS/2008-2 db/conf/iccS/iccS2008-2.html#Iglesias08