J. Bevendorff, B. Stein, M. Hagen, and M. Potthast. Proceedings of the 2019 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 1 (Long and Short Papers), page 654--659. Minneapolis, Minnesota, Association for Computational Linguistics, (June 2019)
L. Kegel, M. Hahmann, and W. Lehner. Proceedings of the Workshops of the EDBT/ICDT 2016 Joint Conference, EDBT/ICDT Workshops 2016, Bordeaux, France, March 15, 2016, volume 1558 of CEUR Workshop Proceedings, CEUR-WS.org, (2016)
