TY JOUR TI Analytical Model of Small Fluctuations of Compressible Magma With Maxwell Rheology in the Feeding System of a Volcano. Part 2. Oscillations of Vertical Velocity KW Volcanic low-frequency earthquakes KW volcano feeding system KW Maxwell rheology KW compressible magmatic body KW analytical model JO Russian Journal of Earth Sciences AU Radionoff, A.A. PY 2024 IS 24 PB Geophysical Center of the Russian Academy of Sciences