00815naa#a2200193#i#4500001002200000005001700022011001400039100004100053101000800094102000700102200010200109210005100211215001000262608002700272675024300299700003500542700003000577856001400607EN\INFRA-M\bibl\3947220241121221918.4##a2500-0535##a20200922b2020####ek#y0engy0150####ca0#aENG##aRU1#aLow-power solar flares of optical and X-ray wavelengths for solar cycles 21–24eJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2020##a6 с.##aJournal article2local##aАстрономия. Астрофизика. Исследование космического пространства. Геодезия. 52aГеология. Геологические и геофизические науки. 55zENG#1aBorovikgAleksandr Vasil'evich#1aZhdanovgAnton Andreevich4#azh-szf.ru