1. Bale RJ, Vogele M, Freysinger W et al. A minimally invasive head holder for frameless stereotaxy. Proc. Int. Symposium on Computer and Communication Systems for Image Guided Diagnosis and Therapy. Paris. June 1996 (CAR 96). Amsterdam: Elsevier Sci., 1996:1042.
2. Bauer B, Van der Laarse R. Aspects of brachytherapy treatment planning: 3D & modern imaging methods. Brachytherapy review proceediags. German Brachytherapy Conference. Freiburg. November 1994. Albert-Ludwigs-University. Freiburg 1994:28–33.
3. Beier J, Wust P, Huth O et al. Planning of catheter implantation for interstitial radiation and hyperthermia therapy. Proc. Int. Symposium on Computer and Communication Systems for Image Guided Diagnosis and Therapy; Paris. June 1996 (CAR 96). Amsterdam: Elsevier Sci., 1996: 643–47.
4. Hilaris BS. Tenner M. Moorthy C et al. Three-dimensional brachytherapy treatment planning at New York Medical College. Brachytherapy from radium to optimization. Nucletron International B. V.. TH Veenedaal. The Netherlands. 1994:307–13.
5. Jacobs H. HDR Brachytherapy for head and neck tumors. Proc. German Brachytherapy Conference. Freiburg 1994. Albert-Ludwigs-University. Freiburg 1994:181–7.