Lior Wolf Yoni Donner Local Regularization for Multiclass Classification Facing Significant Intraclass Variations. 748-759 2008 ECCV (4) http://dx.doi.org/10.1007/978-3-540-88693-8_55 conf/eccv/2008-4 db/conf/eccv/eccv2008-4.html#WolfD08