Alan J. Dix Tom Rodden Nigel Davies Jonathan Trevor Adrian Friday Kevin Palfreyman Exploiting space and location as a design framework for interactive mobile systems. 285-321 2000 7 ACM Trans. Comput.-Hum. Interact. 3 http://doi.acm.org/10.1145/355324.355325 db/journals/tochi/tochi7.html#DixRDTFP00