Stumme, Gerd.
Iceberg Query Lattices for Datalog.
Conceptual Structures at Work: 12th International Conference on Conceptual Structures (ICCS 2004).
editor(s) Wolff, Karl Erich and Pfeiffer, Heather D. and Delugach, Harry S..
LNCS,
(3127)
109-125,
Springer,
Heidelberg,
Year
2004.