00597naa#a2200169#i#450# EN\INFRA-M\bibl\13707 20240720221901.6 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 Moscow INFRA-M Academic Publishing LLC. 2016 11 с. Journal article local Gulyaeva Tamara Lazarevna naukaru.ru