00587naa#a2200169#i#450# EN\INFRA-M\bibl\100193 20251206225426.6 2712-9640 20250626b2025####ek#y0engy0150####ca RU Studying the radial structure of the poloidal Alfvén resonator by the method of phase portraits from Van Allen Probes satellite data Journal article Moscow INFRA-M Academic Publishing LLC. 2025 9 с. Journal article local Физика. 53 Vlasov Aleksandr Aleksandrovich zh-szf.ru