@article{Jarczyk:2020,
author
=
"J.Jarczyk and W.Jarczyk",
title
=
"On a Functional Equation Appearing on the Margins of a Mean Invariance Problem",
journal
=
"Annales Mathematicae Silesianae",
volume
=
"Vol. 34",
number
=
"iss. 1",
pages
=
"96--103",
year
=
"2020",
}