From Wiki
- Gerd Wagner, Adrian Giurca, Ion-Mircea Diaconescu, Grigoris Antoniou and Carlos Viegas Damasio, ERDF Implementation and Evaluation, REWERSE IST 506779 Report I1-D14, March 2008,[1].
- Anastasia Analyti, Grigoris Antoniou, Carlos Viegas Damasio, and Gerd Wagner. Stable Model Theory for Extended RDF Ontologies. In Yolanda Gil, Enrico Motta, V. Richard Benjamins, and Mark A. Musen, editors, Proceedings of the 4th International Semantic Web Conference, volume 3729 of Lecture Notes in Computer Science (LNCS), pages 21–36, Galway, Ireland, 6-10 November 2005. Springer-Verlag.
- Gerd Wagner, Adrian Giurca, and Sergey Lukichev. R2ML: A General Approach for Marking up Rules. In F. Bry, F. Fages, M. Marchiori, and H. Ohlbach, editors, Dagstuhl Seminar Proceedings 05371, Principles and Practices of Semantic Web Reasoning, 2005.
- Anastasia Analyti, Grigoris Antoniou, Carlos Viegas Damasio, and Gerd Wagner. Negation and Negative Information in the W3C Resourse Description Framework. Annals of Mathematics, Computing and Teleinformatics, 1(2):25–34, 2004.
- Gerd Wagner. Web rules need two kinds of negation. In F. Bry, N. Henze, and J. Maluszynski, editors, Principles and Practice of Semantic Web Reasoning, Proceedings of the 1st International Workshop, PPSWR ’03, volume 2901 of Lecture Notes in Computer Science (LNCS), pages 33–50. Springer-Verlag, 2003.
- Heinrich Herre, Jan O. M. Jaspars, and Gerd Wagner. Partial logics with two kinds of negation as a foundation for knowledge-based reasoning. In D.M. Gabbay and H. Wansing, editors, What is Negation? Kluwer Academic Publishers, 1999.
- Gerd Wagner. A database needs two kinds of negation. In B. Talheim and H.D. Gerhardt, editors, 3rd Symposium on Mathematical Fundamentals of Database and KnowledgeBase Systems, volume 495 of Lecture Notes in Computer Science (LNCS), pages 357–371. Springer-Verlag, 1991.
