1. Navigation in surgery;Mezger;Langenbecks Arch Surg,2013
2. Indoor GPS: Ist der Satellitenempfang in Gebaeuden moeglich?;Eissfeller;zfv,2005
3. NDI Optical Measurement Technology, ; 2013 [accessed 01.09.16].
4. Image-guided interventions: technology and applications,2008
5. Optical and electromagnetic tracking for navigated surgery of the sinuses and frontal skull base;Kral;Rhinology,2011