00609naa#a2200169#i#450# EN\\bibl\13707 20260313135436.5 2500-0535 20161027b2016####ek#y0engy0150####ca ENG RU Modification of the solar activity indices in the International Reference Ionosphere IRI and IRI-Plas models due to recent revision of sunspot number time series Journal article Irkutsk Institute of Solar-Terrestrial Physics SB RAS 2016 11 с. Journal article local Gulyaeva Tamara Lazarevna ras.editorum.ru