On the hyperstability of $${\sigma}$$ σ -Drygas functional equation on semigroups
Crossref DOI link: https://doi.org/10.1007/s00010-016-0422-2
Published Online: 2016-05-20
Published Print: 2016-08
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Almahalebi, Muaadh
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