Narzt, W., Pomberger, G., Ferscha, A., Kolb, D., Müller, R., Wieghardt, J., Hörtner, H., Haring, R., Lindinger, C.: “Addressing Concepts for Mobile Location-Based Information Services”; invited Paper at the 12th International Conference on Human-Computer Interaction HCI 2007, Beijing, China, July 22-27 2007 published in the Springer Lecture Notes in Computer Science, C. Stephanidis (Ed.): Universal Access in Human-Computer Interaction, LNCS Part III, Vol. 4556, pp. 507-516

http://www.springerlink.com/content/m1025143135v51w4/