@article{Shevchenko2017calculation,
author={Shevchenko, A.V. and Shapovalov, S..},
title={CALCULATION OF COMPOSITE WOOD BEAMS IS BASED ON VARIATIONAL METHOD},
journal={Bulletin of Belgorod State Technological University named after. V. G. Shukhov},
publisher={Belgorod State Technological University named after V.G. Shukhov},
year={2017},
pages={88-91},
volume={2},
issue={1},
}