Robust road link speed estimates for sparse or missing probe vehicle data. - Peter Widhalm; Markus Piff; Norbert Brändle; Hannes Koller; Martin Reinthaler (ITSC, 2012)

Hands-Free Navigation in Immersive Environments for the Evaluation of the Effectiveness of Indoor Navigation Systems. - Volker Settgast; Marcel Lancelle; Dietmar Bauer; Markus Piff; Dieter W. Fellner (J. Virtual Real. Broadcast., 2014)