Alvina Goh Christophe Lenglet Paul M. Thompson René Vidal Estimating Orientation Distribution Functions with Probability Density Constraints and Spatial Regularity. 877-885 2009 MICCAI (1) http://dx.doi.org/10.1007/978-3-642-04268-3_108 conf/miccai/2009-1 db/conf/miccai/miccai2009-1.html#GohLTV09