Aspekte effizienten Usability Engineerings (Aspects of Efficient Usability Engineering). - Ralf Nieschulz; Björn W. Schuller; Michael Geiger; Robert Neuss (Informationstechnik Tech. Inform., 2002)

Gesture Components for Natural Interaction with In-Car Devices. - Martin Zobl; Ralf Nieschulz; Michael Geiger; Manfred K. Lang; Gerhard Rigoll (Gesture Workshop, 2003)