00729naa#a2200181#i#450# EN\INFRA-M\bibl\71292 20260125151414.7 2712-9640 20240326b2024####ek#y0engy0150####ca RU Observational characteristics of oscillations and waves in and around sunspots. Difficulties in observing and interpreting Journal article Moscow INFRA-M Academic Publishing LLC. 2024 7 с. Journal article local Колебания плазмы. Резонансные колебания в плазме. Ударные волны. 533.951 Kobanov Nikolay Illarionovich Chelpanov Andrei Alekseevich zh-szf.ru