Juan Manuel Pérez Rafael Berlanga Llavori María José Aramburu Torben Bach Pedersen A relevance-extended multi-dimensional model for a data warehouse contextualized with documents. 19-28 2005 conf/dolap/2005 DOLAP http://doi.acm.org/10.1145/1097002.1097007 db/conf/dolap/dolap2005.html#PerezLAP05