Guy De Tré, Rita M. M. De Caluwe, Henri Prade. Null Values Revisited in Prospect of Data Integration. In Mokrane Bouzeghoub, Carole A. Goble, Vipul Kashyap, Stefano Spaccapietra, editors, Semantics for Grid Databases, First International IFIP Conference on Semantics of a Networked World: ICSNW 2004, Paris, France, June 17-19, 2004. Revised Selected Papers. Volume 3226 of Lecture Notes in Computer Science, pages 79-90, Springer, 2004. [doi]
Abstract is missing.