1. Hartrumpf, S.: Coreference resolution with syntactico-semantic rules and corpus statistics. In: Proceedings of the Fifth Computational Natural Language Learning Workshop (CoNLL 2001), Toulouse, France, pp. 137–144 (2001)
2. Text, Speech and Language Technology;S. Harabagiu,2006
3. Hartrumpf, S.: Semantic decomposition for question answering. In: Ghallab, M., Spyropoulos, C.D., Fakotakis, N., Avouris, N. (eds.) Proceedings of the 18th European Conference on Artificial Intelligence (ECAI), Patras, Greece, pp. 313–317 (2008)
4. Leveling, J.: On the role of information retrieval in the question answering system IRSAW. In: Proceedings of the LWA 2006 (Learning, Knowledge, and Adaptability), Workshop Information Retrieval, pp. 119–125. Universität Hildesheim, Hildesheim (2006)
5. Leveling, J.: A modified information retrieval approach to produce answer candidates for question answering. In: Hinneburg, A. (ed.) Proceedings of the LWA 2007 (Lernen-Wissen-Adaption), Workshop FGIR. Gesellschaft für Informatik, Halle/Saale, Germany (2007)