@article{Alzer:2013,
author
=
"H.Alzer and J.Matkowski",
title
=
"A convexity property and a new characterization of Euler's gamma function",
journal
=
"Archiv der Mathematik",
volume
=
"Vol. 100",
number
=
"no. 2",
pages
=
"131--137",
year
=
"2013",
}