Positive solutions for a class of semipositone Neumann problems
Crossref DOI link: https://doi.org/10.1186/s13661-016-0528-4
Published Online: 2016-01-21
Published Print: 2016-12
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Chen, Tianlan
Ma, Ruyun
License valid from 2016-01-21