A note on the orthogonality equation with two functions
Crossref DOI link: https://doi.org/10.1007/s00010-016-0419-x
Published Online: 2016-03-18
Published Print: 2016-10
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Łukasik, Radosław
License valid from 2016-03-18