Peter Lorenzen Brad Davis Sarang C. Joshi Unbiased Atlas Formation Via Large Deformations Metric Mapping. 411-418 2005 conf/miccai/2005-2 MICCAI (2) http://dx.doi.org/10.1007/11566489_51 db/conf/miccai/miccai2005-2.html#LorenzenDJ05