00796naa#a2200205#i#450# EN\\bibl\30604 20260315005727.7 2500-0535 20190930b2019####ek#y0engy0150####ca RUS RU On the formation of the F1 layer during sudden stratospheric warming events Journal article Irkutsk Institute of Solar-Terrestrial Physics SB RAS 2019 10 с. Journal article local Астрономия. Астрофизика. Исследование космического пространства. Геодезия. 52 Физика. 53 RUS Polekh Nelya Mihaylovna Chernigovskaya Marina Arturovna Yakovleva Olga Evgenyevna iszf.editorum.ru