TY JOUR TI SUSTAINABILITY OF NUTS OF THE GENUS JUGLANS TO NEGATIVE WINTER TEMPERATURES IN THE VORONEZH REGION KW trees Juglans species KW introduction KW selection KW frost resistance KW frost stability KW cold resistance JO Forestry Engineering Journal AU Slavskiy, V.A. AU Chernyshov, M.P. PY 2018 IS 8 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov