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Lazer-Leach type condition for second order differential equations at resonance with impulsive effects via variational method

Crossref DOI link: https://doi.org/10.1186/s13661-014-0233-0

Published Online: 2014-10-31

Published Print: 2014-12

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

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