Karabis, A, Belotti P, Baltas D.  2009.  Optimization of Catheter Position and Dwell Time in Prostate HDR Brachytherapy using HIPO and Linear Programming. World Congress on Medical Physics and Biomedical Engineering. 25/XI:612-615.

Baltas, D, Katsilieri Z, Kefala V, Papaioannou S, Karabis A, Mavroidis P, Zamboglou N.  2009.  Influence of Modulation Restriction in Inverse Optimization with HIPO of Prostate Implants on Plan Quality: Analysis Using Dosimetric and Radiobiological Indices. World Congress on Medical Physics and Biomedical Engineering. 25/XI:283-286.