TY JOUR TI An Effective Method of Simulation for the Leksell Gamma Knife Perfexion by Rotating Particles in the Phase Space File KW Gamma-Knife Perfexion KW Monte Carlo simulation KW file phase field JO Medical Radiology and radiation safety AU Medjadj, T.. AU Ksenofontov, A.I. AU Dalechina, A.V. PY 2020 IS 65 PB Federal Medical Biological Agency of Russia