Arno Eigenwillig Lutz Kettner Nicola Wolpert Snap rounding of Bézier curves. 158-167 2007 conf/compgeom/2007 Symposium on Computational Geometry http://doi.acm.org/10.1145/1247069.1247101 db/conf/compgeom/compgeom2007.html#EigenwilligKW07