C. Kling, J. Kunegis, S. Sizov, и S. Staab. Proceedings of the 7th ACM international conference on Web search and data mining, стр. 603--612. ACM, (2014)
S. Jespersen, T. Pedersen, и J. Thorhauge. Proceedings of the 5th ACM International Workshop on Web Information and Data Management, стр. 82--89. New York, NY, USA, ACM, (2003)