Ricardo Pérez-Castillo Ismael Caballero Ignacio García Rodríguez de Guzmán Macario Polo Mario Piattini Eugenio Verbo Establishing Trust Networks based on Data Quality Criteria for Selecting Data Suppliers. 37-42 2009 ICEIS (1) conf/iceis/2009-1 db/conf/iceis/iceis2009-1.html#CastilloCGPPV09