Continuous Noninvasive Pulse Transit Time Measurement for Psycho-physiological Stress Monitoring. - Stefan Hey; Adnene Gharbi; Birte von Haaren; Katrin Walter; Nils König; Simone Löffler (eTELEMED, 2009)

Rethinking e-government from below: new skills for the working level? - Hermann Hill; Tino Schuppan; Katrin Walter (DG.O, 2012)