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Phase Portraits of the Equation $$\ddot{x}+ax\dot{x}+bx^{3}=0$$

Crossref DOI link: https://doi.org/10.1134/S1560354724560053

Published Online: 2024-09-05

Published Print: 2024-12

Update policy: https://doi.org/10.1007/springer_crossmark_policy

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