TY JOUR TI CALCULATION OF COMPOSITE WOOD BEAMS IS BASED ON VARIATIONAL METHOD KW hardwood timber KW composite rods KW the method by V. Z. Vlasov. JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Shevchenko, A.V. AU Shapovalov, S.. PY 2017 IS 2 PB Belgorod State Technological University named after V.G. Shukhov