R. Witte, N. Khamis, и J. Rilling. The Seventh International Conference on Language Resources and Evaluation (LREC 2010), стр. 3845--3850. Valletta, Malta, ELRA, (мая 2010)
R. Witte, и T. Gitzinger. 13th International Conference on Applications of Natural Language to Information Systems (NLDB 2008), том 5039 из LNCS, стр. 317--322. London, UK, Springer, (июня 2008)
D. Frankowski, D. Cosley, S. Sen, L. Terveen, и J. Riedl. SIGIR '06: Proceedings of the 29th annual international ACM SIGIR conference on Research and development in information retrieval, стр. 565--572. New York, NY, USA, ACM, (2006)