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)
J. Illig, A. Hotho, R. Jäschke, and G. Stumme. Knowledge Processing and Data Analysis, volume 6581 of Lecture Notes in Computer Science, Springer Berlin / Heidelberg, 10.1007/978-3-642-22140-8_9.(2011)
F. Abel, N. Henze, and D. Krause. Proceeding of the 17th ACM conference on Information and knowledge management, page 1429--1430. New York, NY, USA, ACM, (2008)