D. Hoppe. Proceedings of the Schloss Dagstuhl Seminar on Challenges in Document Mining, page 81. Wadern, Germany, Leibniz-Zentrum für Informatik, (April 2011)Invited talk.
B. Stein, T. Gollub, and D. Hoppe. 20th ACM International Conference on Information and Knowledge Management (CIKM 11), page 2141-2144. ACM, (October 2011)
B. Stein, T. Gollub, and D. Hoppe. 21st ACM International Conference on Information and Knowledge Management (CIKM 12), page 1940-1944. ACM, (October 2012)
B. Stein, D. Hoppe, and T. Gollub. 13th Conference of the European Chapter of the Association for Computational Linguistics (EACL 12), page 570-579. Association for Computational Linguistics, (April 2012)