Media type: E-Article Title: Multiplicity of solutions to a four-point boundary value problem of a differential system via variational approach Contributor: Ge, Weigao; Zhao, Zhihong Published: Springer Science and Business Media LLC, 2016 Published in: Boundary Value Problems, 2016 (2016) 1 Language: English DOI: 10.1186/s13661-016-0559-x ISSN: 1687-2770 Keywords: Algebra and Number Theory ; Analysis Origination: Footnote: Access State: Open Access