@article{Matkowski:2009,
author
=
"J.Matkowski and J.Rätz",
title
=
"On the equality condition in Hölder's and Minkowski's inequalities",
journal
=
"Aequationes Mathematicae",
volume
=
"Vol. 46",
number
=
"no 3",
pages
=
"220--228",
year
=
"1993",
}