P. Ferragina, und A. Gulli. WWW '05: Special interest tracks and posters of the 14th international conference on World Wide Web, Seite 801--810. New York, NY, USA, ACM Press, (2005)
P. Brusilovsky, R. Farzan, und J. Ahn. JCDL '05: Proceedings of the 5th ACM/IEEE-CS joint conference on Digital libraries, Seite 9--18. New York, NY, USA, ACM, (2005)
N. Kaplan, und Y. Chisik. JCDL '05: Proceedings of the 5th ACM/IEEE-CS joint conference on Digital libraries, Seite 235--243. New York, NY, USA, ACM Press, (2005)
R. Torres, S. Mcnee, M. Abel, J. Konstan, und J. Riedl. International Conference on Digital Libraries,Proceedings of the 4th ACM/IEEE-CS joint conference on Digital libraries, (2004)