Gabriel Brisson Takeo Kanade Anthony M. DiGioia Branislav Jaramaz Precision Freehand Sculpting of Bone. 105-112 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3217&spage=105 2004 conf/miccai/2004-2 MICCAI (2) db/conf/miccai/miccai2004-2.html#BrissonKDJ04