Dieter Schmalstieg Anton L. Fuhrmann Gerd Hesina Zsolt Szalavári L. Miguel Encarnação Michael Gervautz Werner Purgathofer The <i>Studierstube</i> Augmented Reality Project. 33-54 2002 11 Presence 1 db/journals/presence/presence11.html#SchmalstiegFHSEGP02 http://dx.doi.org/10.1162/105474602317343640