@article{Popov2021method,
author={Popov, A.V. and Romanov, A.A.},
title={Method for Operational Diagnostics of the Prepumping State of Gas Turbine Engines Based on Invariants of Acoustic Processes},
journal={NDT World},
publisher={LLC SVEN},
year={2021},
pages={58-61},
volume={24},
issue={1},
}