S. Doerfel, D. Zoller, P. Singer, T. Niebler, A. Hotho, and M. Strohmaier. Proceedings of the 16th LWA Workshops: KDML, IR and FGWM, Aachen, Germany, September 8-10, 2014., volume 1226 of CEUR Workshop Proceedings, page 18--19. CEUR-WS.org, (2014)
F. Mitzlaff, M. Atzmueller, D. Benz, A. Hotho, and G. Stumme. Analysis of Social Media and Ubiquitous Data, volume 6904 of Lecture Notes in Computer Science, page 79-98. Springer Berlin Heidelberg, (2011)
F. Mitzlaff, M. Atzmueller, D. Benz, A. Hotho, and G. Stumme. Analysis of Social Media and Ubiquitous Data, volume 6904 of Lecture Notes in Computer Science, Springer Berlin Heidelberg, (2011)