B. Kules, R. Capra, M. Banta, и T. Sierra. JCDL '09: Proceedings of the 9th ACM/IEEE-CS joint conference on Digital libraries, стр. 313--322. New York, NY, USA, ACM, (2009)
P. Schonhofen. WI '06: Proceedings of the 2006 IEEE/WIC/ACM International Conference on Web Intelligence, стр. 456--462. Washington, DC, USA, IEEE Computer Society, (2006)
J. Hu, G. Wang, F. Lochovsky, J. tao Sun, и Z. Chen. WWW '09: Proceedings of the 18th international conference on World wide web, стр. 471--480. New York, NY, USA, ACM, (2009)