@InCollection{Matkowski:2002,
author
=
"J.Matkowski",
title
=
"On invariant generalized Beckenbach-Gini means",
pages
=
"219--230",
year
=
"2002",
booktitle
=
"Functional equations - resilts and advances ISBN: 1402004850",
publisher
=
"Kluwer Academic Publishers",
address
=
"Dordrecht",
series
=
"Advances in Mathematics, 3",
}