A User Interface to a True 3-D Display Device. - Bruce A. Hobbs; Martin R. Stytz (HCI (2), 1993)

Portraying and Understanding Large-Scale Distributed Virtual Environments: Experience and Tentative Conclusions. - Martin R. Stytz; Bruce A. Hobbs; Andrea Kunz; Brian Soltz; Kirk Wilson (Presence Teleoperators Virtual Environ., 1995)