D. Helic, and M. Strohmaier. Proceedings of the 20th ACM international conference on Information and knowledge management, page 525--534. New York, NY, USA, ACM, (2011)
D. Helic, and M. Strohmaier. Proceedings of the 20th ACM international conference on Information and knowledge management, page 525--534. New York, NY, USA, ACM, (2011)