Image guided surgery extended by remote stereotactic visualization. - Werner Millesi; Michael Truppe; Franz Watzinger; Arne Wagner; Rolf Ewers (CVRMed, 1997)

Cocepts and Results in the Development of a Hybrid Tracking System for Computer Aided Surgery. - Wolfgang Birkfellner; Franz Watzinger; Felix Wanschitz; Georg Enislidis; Michael Truppe; Rolf Ewers; Helmar Bergmann (MICCAI, 1998)

Calibration of tracking systems in a surgical environment. - Wolfgang Birkfellner; Franz Watzinger; Felix Wanschitz; Rolf Ewers; Helmar Bergmann (IEEE Trans. Medical Imaging, 1998)

Development of the Varioscope AR. A see-through HMD for computer-aided surgery. - Wolfgang Birkfellner; Klaus Huber; Franz Watzinger; Franz Figl; Felix Wanschitz; Rudolf Hanel; Dietmar Rafolt; Rolf Ewers; Helmar Bergmann (ISAR, 2000)

The Varioscope AR - A Head-Monted Operating Microscope for Augmented Reality. - Wolfgang Birkfellner; Michael Figl; Klaus Huber; Franz Watzinger; Felix Wanschitz; Rudolf Hanel; Arne Wagner; Dietmar Rafolt; Rolf Ewers; Helmar Bergmann (MICCAI, 2000)

Accuracy of a Navigation System for Computer-Aided Oral Implantology. - Wolfgang Birkfellner; Felix Wanschitz; Franz Watzinger; Klaus Huber; Michael Figl; Christian Schopper; Rudolf Hanel; Franz Kainberger; Joachim Kettenbach; Sanda Patruta; Rolf Ewers; Helmar Bergmann (MICCAI, 2000)

Calibration of a head-mounted operating microscope for augmented reality visualization in CAS. - Wolfgang Birkfellner; Michael Figl; Klaus Huber; Franz Watzinger; Felix Wanschitz; Rudolf Hanel; Johann Hummel; Rolf Ewers; Helmar Bergmann (CARS, 2001)

Computed Navigation in Cranio-Maxillo-Facial and Oral Head and Neck Surgery: Principles, Indications and Potentials for Telepresence and Teleassistance. - Arne Wagner; Werner Millesi; Franz Watzinger; Michael Truppe; Michael Rasse; Georg Enislidis; Christian Kermer; Rolf Ewers (Virtual Reality: Cognitive Foundations, Technological Issues & Philosophical Implications, 2001)

Current Status of the Varioscope AR, a Head-Mounted Operating Microscope for Computer-Aided Surgery. - Michael Figl; Wolfgang Birkfellner; Johann Hummel; Rudolf Hanel; Peter Homolka; Franz Watzinger; Felix Wanschitz; Rolf Ewers; Helmar Bergmann (ISAR, 2001)

Calibration of projection parameters in the varioscope AR, a head-mounted display for augmented-reality visualization in image-guided therapy. - Wolfgang Birkfellner; Michael Figl; Klaus Huber; Johann Hummel; Rudolf A. Hanel; Peter Homolka; Franz Watzinger; Felix Wanschitz; Rolf Ewers; Helmar Bergmann (Image-Guided Procedures, 2001)

The Control Unit for a Head Mounted Operating Microscope Used for Augmented Reality Visualization in Computer Aided Sugery. - Michael Figl; Wolfgang Birkfellner; Christopher Ede; Johann Hummel; Rudolf Hanel; Franz Watzinger; Felix Wanschitz; Rolf Ewers; Helmar Bergmann (ISMAR, 2002)

PC-based control unit for a head-mounted operating microscope for augmented-reality visualization in surgical navigation. - Michael Figl; Wolfgang Birkfellner; Franz Watzinger; Felix Wanschitz; Johann Hummel; Rudolf A. Hanel; Rolf Ewers; Helmar Bergmann (Image-Guided Procedures, 2002)

A Head-Mounted Operating Binocular for Augmented Reality Visualization in Medicine - Design and Initial Evaluation. - Wolfgang Birkfellner; Michael Figl; Klaus Huber; Franz Watzinger; Felix Wanschitz; Johann Hummel; Rudolf Hanel; Wolfgang Greimel; Peter Homolka; Rolf Ewers; Helmar Bergmann (IEEE Trans. Medical Imaging, 2002)

Accuracy of the transfer of a preoperative plan from stereolithographic skull models to the patient. - Kurt Schicho; Rolf Ewers; Arne Wagner; Rudolf Seemann; Michael Figl; Julia Fruehwald; Clemens Klug (CARS, 2004)

A fully automated calibration method for an optical see-through head-mounted operating microscope with variable zoom and focus. - Michael Figl; Christopher Ede; Johann Hummel; Felix Wanschitz; Rolf Ewers; Helmar Bergmann; Wolfgang Birkfellner (IEEE Trans. Medical Imaging, 2005)

Augmented Reality Telenavigation in Cranio Maxillofacial Oral Surgery. - Rolf Ewers; Kurt Schicho (MIE, 2009)