00703naa#a2200193#i#450# EN\INFRA-M\bibl\29510 20240425072504.4 2500-0535 20190628b2019####ek#y0engy0150####ca RUS RU Ionospheric effects of two solar flares in the maximum of solar cycle 23 and in the minimum of solar cycle 24 Journal article Moscow INFRA-M Academic Publishing LLC. 2019 4 с. Journal article local Геология. Геологические и геофизические науки. 55 RUS Smirnov Vladimir Mihaylovich Smirnova Elena Vladimirovna naukaru.ru