Clare Poynton Mark Jenkinson Stephen Whalen Alexandra Golby William Wells Fieldmap-Free Retrospective Registration and Distortion Correction for EPI-Based Functional Imaging. 271-279 2008 MICCAI (2) http://dx.doi.org/10.1007/978-3-540-85990-1_33 conf/miccai/2008-2 db/conf/miccai/miccai2008-2.html#PoyntonJWGW08