Joachims, Thorsten, Granka, Laura, Pan, Bing, Hembrooke, Helene, Radlinski, Filip, Gay, Geri, Evaluating the accuracy of implicit feedback from clicks and query reformulations in Web search, in: ACM Trans. Inf. Syst. 25 2 (2007), S. 7.

Joachims, Thorsten, Granka, Laura, Pan, Bing, Hembrooke, Helene, Gay, Geri: Accurately interpreting clickthrough data as implicit feedback. In: Proceedings of the 28th annual international ACM SIGIR conference on Research and development in information retrieval. New York, NY, USA : ACM, 2005. - ISBN 1-59593-034-5, S. 154--161

Joachims, Thorsten, Granka, Laura, Pan, Bing, Hembrooke, Helene, Gay, Geri: Accurately interpreting clickthrough data as implicit feedback. In: SIGIR '05: Proceedings of the 28th annual international ACM SIGIR conference on Research and development in information retrieval. New York, NY, USA : ACM, 2005. - ISBN 1-59593-034-5, S. 154--161