TY JOUR TI Development of the Improved Method for Measuring the Activity of Industrial Beta Radiation Sources and Method for Homogeneity Control KW radionuclide sources KW strontium-90 KW improved method for measuring activity KW PENELOPE program KW homogeneity control JO ANRI AU Pahomov, S.A. AU Kuz'mina, T.E. AU Kurysheva, E.V. AU Sidorov, V.V. AU Shahetov, G.V. PY 2024 IS 0 PB Scientific-Production Enterprise “Dosa”