K. Kobs, T. Koopmann, A. Zehe, D. Fernes, P. Krop, and A. Hotho. Findings of the Association for Computational Linguistics: EMNLP 2020, page 878--883. Online, Association for Computational Linguistics, (November 2020)
M. Grahl, A. Hotho, and G. Stumme. 7th International Conference on Knowledge Management (I-KNOW '07), page 356-364. Graz, Austria, Know-Center, (September 2007)