Book Section

Calì, Andrea and Calvanese, D. and De Giacomo, G. and Lenzerini, M. (2001) Accessing data integration systems through conceptual schemas. In: S. Kunii, H. and Jajodia, S. and Sølvberg, A. (eds.) ER 2001: Conceptual Modeling. Lecture Notes in Computer Science 2224. Springer. ISBN 9783540428664.