TY JOUR TI Features of formation of draft of flat raft KW flat raft unit with stabilized buoyancy KW draft KW reserve buoyancy KW flexible waterproof material JO Forestry Engineering Journal AU Vasilyev, V.. PY 2014 IS 4 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov