P. Singer, T. Niebler, M. Strohmaier, and A. Hotho. Proceedings of the 22nd international conference on World Wide Web companion, page 171--172. Republic and Canton of Geneva, Switzerland, International World Wide Web Conferences Steering Committee, (2013)
D. Dimitrov, P. Singer, D. Helic, and M. Strohmaier. Proceedings of the 26th ACM Conference on Hypertext &\#38; Social Media, page 59--68. New York, NY, USA, ACM, (2015)