%0 Journal Article %A S. V. Borzunov %T Transformation of oscillations of an unstable system in an energy harvester %J Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ %D 2023 %P 7-18 %V 29 %N 2 %U http://geodesic.mathdoc.fr/item/VSGU_2023_29_2_a0/ %G ru %F VSGU_2023_29_2_a0