Manuel J. Marín-Jiménez Nicolas Pérez de la Blanca Sharing Visual Features for Animal Categorization: An Empirical Study. 13-22 2006 conf/iciar/2006-2 ICIAR (2) http://dx.doi.org/10.1007/11867661_2 db/conf/iciar/iciar2006-2.html#Marin-JimenezB06