Adrien Peytavie Eric Galin Jérôme Grosjean Stéphane Mérillou A Grasping Hand, Made of Small Stones. 250-251 2010 29 Comput. Graph. Forum 1 http://dx.doi.org/10.1111/j.1467-8659.2010.01593.x db/journals/cgf/cgf29.html#PeytavieGGM10