Cimiano, Philipp ; Hotho, Andreas ; Stumme, Gerd ; Tane, Julien ; Eklund, Peter (Bearb.): Conceptual Knowledge Processing with Formal Concept Analysis and Ontologies In: Concept Lattices. 2961. Berlin/Heidelberg : Springer, 2004 (Lecture Notes in Computer Science). - ISBN-978-3-540-21043-6, S. 189--207

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

Tane, Julien ; Schmitz, Christoph ; Stumme, Gerd: Semantic resource management for the web: an e-learning application. In: Proc. 13th International World Wide Web Conference (WWW 2004), 2004, S. 1-10