TY JOUR TI Radiation monitoring in forest ecosystems Central forest-steppe Russia KW monitoring KW radiation KW forest ecosystems KW specific activity KW the density of radioactive cont JO Forestry Engineering Journal AU Skripnikov, V.. AU Shchetinkin, S.. PY 2015 IS 5 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov