MRT-VR: A Multi-User Virtual Environment for Educational Purposes. - Dieter W. Fellner; Armin Hopp (EUROMEDIA, 1998)

VR-LAB - A Distributed Multi-User Environment for Educational Purposes and Presentations. - Dieter W. Fellner; Armin Hopp (VRML, 1999)

VR-LAB: a distributed multi-user environment for educational purposes and presentations. - Armin Hopp (2000)

Using a single Spatial light modulator for stereoscopic images of high color quality and resolution. - Armin Hopp (IPT/EGVE, 2005)

A Single Chip DLP Projector for Stereoscopic Images of High Color Quality and Resolution. - Armin Hopp; Sven Havemann; Dieter W. Fellner (EGVE (Short Papers & Posters), 2007)