Judy Jun Feng Horace Ho-Shing Ip Shuk H. Cheng A 3D Geometric Deformable Model for Tubular Structure Segmentation. 174-180 2004 conf/mmm/2004 MMM http://csdl.computer.org/comp/proceedings/mmm/2004/2084/00/20840174abs.htm db/conf/mmm/mmm2004.html#FengIC04