Tore Urnes Arne S. Hatlen Pål S. Malm Øystein Myhre Building Distributed Context-Aware Applications. 38-41 2001 5 Personal and Ubiquitous Computing 1 http://link.springer.de/link/service/journals/00779/bibs/1005001/10050038.htm db/journals/puc/puc5.html#UrnesHMM01