1. Ferscha, A., Hechinger, M., Mayrhofer, R., dos Santos Rocha, M., Franz, M., Oberhauser, R.: Digital aura. In: Advances in Pervasive Computing. A Collection of Contributions Presented at the 2nd International Conference on Pervasive Computing (Pervasive 2004), vol. 176, pp. 405–410. Austrian Computer Society (OCG), Vienna (2004)
2. Lecture Notes in Computer Science;G. Lenzini,2009
3. Holzmann, C., Hechinger, M., Ferscha, A.: Relation-centric development of spatially-aware applications. In: Proceedings of the 17th IEEE International Workshops on Enabling Technologies: Infrastructures for Collaborative Enterprises (WETICE 2008). IEEE CS Press, Rome (2008)
4. Schmitzberger, H., Narzt, W.: Leveraging wlan infrastructure for large-scale indoor tracking. In: Proceedings of the Sixth International Conference on Wireless and Mobile Communications, ICWMC 2010 (2010)
5. Kjaergaard, M.B., Treu, G., Ruppel, P., Küpper, A.: Efficient indoor proximity and separation detection for location fingerprinting. In: MOBILWARE 2008: Proceedings of the 1st International Conference on MOBILe Wireless MiddleWARE, Operating Systems, and Applications, pp. 1–8. ICST, Brussels (2007)