Domenico Lembo Maurizio Lenzerini Riccardo Rosati Source inconsistency and incompleteness in data integration. 2002 conf/krdb/2002 KRDB http://sunsite.informatik.rwth-aachen.de/Publications/CEUR-WS/Vol-54/Lembo_Lenz_Ros.pdf db/conf/krdb/krdb2002.html#LemboLR02