TY JOUR TI Observational characteristics of oscillations and waves in and around sunspots. Difficulties in observing and interpreting KW sunspots KW oscillations KW running penumbral waves KW flare modulation of oscillations JO Solar-Terrestrial Physics AU Kobanov, N.I. AU Chelpanov, A.A. PY 2024 IS 10 PB INFRA-M Academic Publishing LLC.