David MacDonald David Avis Alan C. Evans Proximity Constraints in Deformable Models for Cortical Surface Identification. 650-659 http://link.springer.de/link/service/series/0558/bibs/1496/14960650.htm 1998 conf/miccai/1998 MICCAI db/conf/miccai/miccai1998.html#MacDonaldAE98