TY JOUR TI Calculation of the Depth Dependence of Relative Biological Effectiveness For Clinical Proton Beams KW proton radiotherapy KW relative biological effectiveness KW linear energy transfer KW spread-out Bragg peak KW Monte-Carlo method KW Geant4 JO Medical Radiology and radiation safety AU Belousov, A.V. AU Bahtiosin, R.B. AU Kolyvanova, M.A. AU Krusanov, G.A. AU Shulepova, L.I. AU Morozov, V.N. PY 2019 IS 64 PB Federal Medical Biological Agency of Russia