H. Zaragoza, B. Cambazoglu, und R. Baeza-Yates. Proceedings of the 19th ACM international conference on Information and knowledge management, Seite 529--538. New York, NY, USA, ACM, (2010)
K. Wang, T. Walker, und Z. Zheng. KDD '09: Proceedings of the 15th ACM SIGKDD international conference on Knowledge discovery and data mining, Seite 1355--1364. New York, NY, USA, ACM, (2009)
K. Järvelin. Proceedings of the 2nd International Conference on the Theory of Information Retrieval. Lecture Notes in Computer Science, 5766, Seite 289-296. Heidelberg, Springer, (2009)
A. Kittur, E. Chi, und B. Suh. CHI '08: Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems, Seite 453--456. New York, NY, USA, ACM, (2008)