M. Haouach, G. Venturini, und C. Guinot. HT '09: Proceedings of the Twentieth ACM Conference on Hypertext and Hypermedia, New York, NY, USA, ACM, (Juli 2009)
Y. Zhang, N. Zhang, und J. Tang. ECML PKDD Discovery Challenge 2009 (DC09), 497, Seite 297--306. Bled, Slovenia, CEUR Workshop Proceedings, (September 2009)