E. Lacic, D. Kowald, P. Seitlinger, C. Trattner, and D. Parra. Hypertext 2014 Extended Proceedings Late-breaking Results, Doctoral Consortium and Workshop Proceedings of the 25th ACM Hypertext and Social Media Conference (Hypertext 2014) Santiago, Chile, September 1-4, 2014., volume 1210 of CEUR Workshop Proceedings, CEUR-WS.org, (2014)
P. Heymann, D. Ramage, and H. Garcia-Molina. SIGIR '08: Proceedings of the 31st Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, page 531--538. New York, NY, USA, ACM, (2008)
P. Chirita, S. Costache, W. Nejdl, and S. Handschuh. WWW '07: Proceedings of the 16th international conference on World Wide Web, page 845--854. New York, NY, USA, ACM, (2007)