@article{Smirnov2019ionospheric,
author={Smirnov, V.M. and Smirnova, E.V.},
title={Ionospheric effects of two solar flares in the maximum of solar cycle 23 and in the minimum of solar cycle 24},
journal={Solar-Terrestrial Physics},
publisher={INFRA-M Academic Publishing LLC.},
year={2019},
pages={76-80},
volume={5},
issue={2},
}