Alvaro Cortés-Calabuig Marc Denecker Ofer Arieli Bert Van Nuffelen Maurice Bruynooghe On the Local Closed-World Assumption of Data-Sources. 145-157 2005 conf/lpnmr/2005 LPNMR http://dx.doi.org/10.1007/11546207_12 db/conf/lpnmr/lpnmr2005.html#Cortes-CalabuigDANB05