%0 Journal Article %T Detecting groups of eigenfrequencies of vertical standing waves in the layered structure of the Earth’s crust %A Polyakov, A.R. %A Tsegmed, B.. %K signal processing technique, equidistant frequencies, eigenfrequencies, P- and S-type elastic waves %J Solar-Terrestrial Physics %D 2025 %N 11 %P 6 %I INFRA-M Academic Publishing LLC.