Tomoya Ito Tadahiro Fujimoto Kazunobu Muraoka Norishige Chiba Modeling Rocky Scenery Taking into Account Joints. 244-247 2003 conf/cgi/2003 Computer Graphics International http://csdl.computer.org/comp/proceedings/cgi/2003/1946/00/19460244abs.htm db/conf/cgi/cgi2003.html#ItoFMC03