The Cosine–Sine functional equation on a semigroup with an involutive automorphism
Crossref DOI link: https://doi.org/10.1007/s00010-017-0512-9
Published Online: 2017-10-12
Published Print: 2017-12
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Ajebbar, Omar
Elqorachi, Elhoucien
License valid from 2017-10-12