@article{Berngardt2018automatic, author={Berngardt, O.I. and Bubnova, T.V. and Podlesnyi, A.V.}, title={Automatic estimation of dynamics of ionospheric disturbances with 1–15 minute lifetimes as derived from ISTP SB RAS fast chirp ionosonde data}, journal={Solar-Terrestrial Physics}, publisher={INFRA-M Academic Publishing LLC.}, year={2018}, pages={64-70}, volume={4}, issue={1}, }