Loreto Bravo, Leopoldo E. Bertossi. Semantically Correct Query Answers in the Presence of Null Values. In Torsten Grust, Hagen Höpfner, Arantza Illarramendi, Stefan Jablonski, Marco Mesiti, Sascha Müller, Paula-Lavinia Patranjan, Kai-Uwe Sattler, Myra Spiliopoulou, Jef Wijsen, editors, Current Trends in Database Technology - EDBT 2006, EDBT 2006 Workshops PhD, DataX, IIDB, IIHA, ICSNW, QLQP, PIM, PaRMA, and Reactivity on the Web, Munich, Germany, March 26-31, 2006, Revised Selected Papers. Volume 4254 of Lecture Notes in Computer Science, pages 336-357, Springer, 2006. [doi]
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