TY JOUR TI STRENGTH OF FINGER JOINTS IN TIMBER BEAMS KW beam KW timber structure element KW glued joint KW finger joint KW stresses JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Malyhina, V.. AU Frolov, N.. AU Fam, S.. PY 2016 IS 1 PB Belgorod State Technological University named after V.G. Shukhov