@article{Кушнаренко2021signs, author={Кушнаренко, Г.П. and Яковлева, О.Е. and Кузнецова, Г.М.}, title={Signs of anomalous behavior of the ionosphere in 2003–2014 at F1-layer heights over Irkutsk}, journal={Solar-Terrestrial Physics}, publisher={Институт солнечно-земной физики СО РАН}, year={2021}, pages={74-80}, volume={7}, issue={2}, }