Gaetano Borriello Lars Erik Holmquist UbiComp 2002: Ubiquitous Computing, 4th International Conference, Göteborg, Sweden, September 29 - October 1, 2002, Proceedings Ubicomp Lecture Notes in Computer Science 2498 Springer 2002 3-540-44267-7 db/conf/huc/ubicomp2002.html