TY JOUR TI Concerning the Tritium Dose at the Cellular Level KW microdosimetry KW dosimetry of internal irradiation KW soft beta emitters KW tritium KW point-source function KW absorbed-dose distribution KW biological cell KW cell nucleus JO Medical Radiology and radiation safety AU Timofeev, L.V. AU Maksimov, A.A. AU Kochetkov, O.A. AU Klochkov, V.N. PY 2021 IS 65 PB Federal Medical Biological Agency of Russia