00546naa#a2200181#i#4500001001500000005001700015011001400032100004100046101000800087102000700095200009300102210007200195215001000267608002700277700002200304700002600326856001200352EN\\bibl\4654720240503104140.5##a1681-1208##a20201225b2020####ek#y0engy0150####ca0#aENG##aRU1#aThe aspects of K-index calculation at Russian Geomagnetic ObservatorieseJournal article1#aMoscowcGeophysical Center of the Russian Academy of Sciencesd2020##a0 с.##aJournal article2local#1aPetrovgValery G #1aKrasnoperovgRoman I 4#arjes.ru