@article{Kushnarenko2021signs, author={Kushnarenko, G.P. and Yakovleva, O.E. and Kuznetsova, G.M.}, title={Signs of anomalous behavior of the ionosphere in 2003–2014 at F1-layer heights over Irkutsk}, journal={Solar-Terrestrial Physics}, publisher={INFRA-M Academic Publishing LLC.}, year={2021}, pages={74-80}, volume={7}, issue={2}, }