M. Graube, J. Pfeffer, J. Ziegler, and L. Urbas. Network-Based Information Systems (NBiS), 2011 14th International Conference on, page 162 -167. (September 2011)
J. Ziegler, M. Graube, A. Suhrbier, N. Wessel, H. Malberg, and L. Urbas. Proceedings of the 13th International Conference on Human Computer Interaction with Mobile Devices and Services, page 191--200. New York, NY, USA, ACM, (2011)
M. Graube, J. Pfeffer, J. Ziegler, and L. Urbas. Network-Based Information Systems (NBiS), 2011 14th International Conference on, page 162 -167. (September 2011)