00711naa#a2200181#i#450# EN\\bibl\30599 20260312120759.4 2500-0535 20190930b2019####ek#y0engy0150####ca ENG RU Heuristic model of solar X-ray spectrum according to satellite data for geophysical applications Journal article Irkutsk Institute of Solar-Terrestrial Physics SB RAS 2019 11 с. Journal article local Астрономия. Астрофизика. Исследование космического пространства. Геодезия. 52 ENG Korsunskaja Julia Albertovna ras.editorum.ru