@article{Полех2019on, author={Полех, Н.М. and Черниговская, М.А. and Яковлева, О.Е.}, title={On the formation of the F1 layer during sudden stratospheric warming events}, journal={Solar-Terrestrial Physics}, publisher={Институт солнечно-земной физики СО РАН}, year={2019}, pages={117-127}, volume={5}, issue={3}, }