@article{Tupov2017used,
author={Tupov, V.V. and Mironova, A.N.},
title={Used in Acoustic Projects Calculation of Reflection Coefficient for End Opening of Channel without Flange},
journal={Safety in Technosphere},
publisher={INFRA-M Academic Publishing LLC.},
year={2017},
pages={34-41},
volume={6},
issue={3},
}