2008 · Marit Natvig, Hans Westerheim · 15th World Congress on Intelligent Transport Systems and ITS America's 2008 Annual MeetingITS AmericaERTICOITS JapanTransCore · 5
2009 · Jan Tore Pedersen, Paolo Paganelli, et al. · 16th ITS World Congress and Exhibition on Intelligent Transport Systems and ServicesITS AmericaERTICOITS Japan · 3
2008 · Hans Westerheim, Marit Natvig · 15th World Congress on Intelligent Transport Systems and ITS America's 2008 Annual MeetingITS AmericaERTICOITS JapanTransCore · 3