Atzmueller, Martin, Becker, Martin, Kibanov, Mark, Scholz, Christoph, Doerfel, Stephan, Hotho, Andreas, Macek, Bjoern-Elmar, Mitzlaff, Folke, Mueller, Juergen and Stumme, Gerd. "Ubicon and its Applications for Ubiquitous Social Computing." New Review of Hypermedia and Multimedia 1 , no. 20 (2014): 53--77.