00659naa#a2200181#i#450# EN\INFRA-M\bibl\48924 20240420002926.6 2500-0535 20220930b2022####ek#y0engy0150####ca ENG RU Structure of groups of eigenfrequencies in spectra of geomagnetic pulsations in the nightside magnetosphere Journal article Moscow INFRA-M Academic Publishing LLC. 2022 4 с. Journal article local Геология. Геологические и геофизические науки. 55 ENG Polyakov Andrey Redzhenaldovich naukaru.ru