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)
A. Ruopp, P. Daus, A. Ruprecht, and S. Riedelbauch. 10th European Wave and Tidal Energy Conference (EWTEC), page 10. Aalborg, Denmark, (2th-5th, September 2013)
M. Wernke, P. Skvortsov, F. Dürr, and K. Rothermel. Personal and Ubiquitous Computing (Special Issue on Security and Trust in Context-Aware Systems), 18 (1):
163--175(2014)