@article{Givishvili2022long-term,
author={Givishvili, G.V. and Leshchenko, L.N.},
title={Long-term trend of the ionospheric E-layer response to solar flares},
journal={Solar-Terrestrial Physics},
publisher={INFRA-M Academic Publishing LLC.},
year={2022},
pages={51-57},
volume={8},
issue={1},
}