Kristin Potter Amy Gooch Bruce Gooch Peter Willemsen Joe Michael Kniss Richard F. Riesenfeld Peter Shirley Resolution Independent NPR-Style 3D Line Textures. 56-66 2009 28 Comput. Graph. Forum 1 http://dx.doi.org/10.1111/j.1467-8659.2008.01297.x db/journals/cgf/cgf28.html#PotterGGWKRS09