On Sandwich Theorem for Delta-Subadditive and Delta-Superadditive Mappings
Crossref DOI link: https://doi.org/10.1007/s00025-016-0627-7
Published Online: 2016-12-05
Published Print: 2017-09
Update policy: https://doi.org/10.1007/springer_crossmark_policy
OlbryĆ, Andrzej
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