Elmar Eisemann Holger Winnemöller John C. Hart David Salesin Stylized Vector Art from 3D Models with Region Support. 1199-1207 2008 27 Comput. Graph. Forum 4 http://dx.doi.org/10.1111/j.1467-8659.2008.01258.x db/journals/cgf/cgf27.html#EisemannWHS08