Gurevych, Iryna and Porzel, Robert and Slinko, Elena and Pfleger, Norbert and Alexandersson, Jan and Merten, Stefan (2003):
Less is More: Using a Single Knowledge Representation in Dialogue Systems.
In: Proceedings of the HLT-NAACL Workshop on Text Meaning, pp. 14-21,
[Conference or Workshop Item]

Porzel, Robert and Pfleger, Norbert and Merten, Stefan and Löckelt, Markus and Gurevych, Iryna and Engel, Ralf and Alexandersson, Jan (2003):
More on Less: Further Applications of Ontologies in Multi-Modal Dialogue Systems.
In: Proceedings of the IJCAI Workshop on Knowledge and Reasoning in Practical Dialogue Systems,
[Conference or Workshop Item]