TY JOUR TI Methodical Approaches to Establishing Control Levels’ Parameters of the Radiation Environment and Radiation Doses to Staff KW control levele KW dose limit KW personnel KW measurement uncertainty JO Medical Radiology and radiation safety AU Simakov, A.V. AU Abramov, Y.V. AU Proskuryakova, N.L. AU Isaev, O.V. AU Alferova, T.M. PY 2021 IS 66 PB Federal Medical Biological Agency of Russia