TI  - THE DETERMINATION OF THE VARIATION OF EFFECTIVE SOURCE TO SKIN DISTANCE WITH FIELD SIZE AND ELECTRON ENERGY ON SATURNE 42 LINEAR ACCELERATOR
AU  - BASRİ GÜNHAN, 
AU  - AYŞE KOCA, 
AU  - BAYRAM DEMİR, 
AU  - SONGÜL KARAÇAM, 
SO  - Turk J Oncol 2002;17:086-089.
DO  -