Existence of positive solutions of second-order periodic boundary value problems with sign-changing Green’s function
Crossref DOI link: https://doi.org/10.1007/s10255-017-0657-2
Published Online: 2017-04-08
Published Print: 2017-04
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Gao, Cheng-hua
Zhang, Fei
Ma, Ru-yun
License valid from 2017-04-01