Positive solutions of periodic boundary value problems for second-order differential equations with the nonlinearity dependent on the derivative
Crossref DOI link: https://doi.org/10.1007/s12190-014-0842-x
Published Online: 2014-10-17
Published Print: 2015-10
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Liu, Jian
Feng, Hanying
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