Multiplicity of positive periodic solutions to third-order variable coefficients singular dynamical systems
Crossref DOI link: https://doi.org/10.1186/s13661-023-01750-1
Published Online: 2023-06-29
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Li, Shengjun
Zhang, Fang
Text and Data Mining valid from 2023-06-29
Version of Record valid from 2023-06-29
Article History
Received: 6 April 2023
Accepted: 3 June 2023
First Online: 29 June 2023
Declarations
:
: The authors declare no competing interests.