@article{Matkowski:2009,
author
=
"J.Matkowski and M.Pycia",
title
=
"On $(\alpha,a)$-convex functions",
journal
=
"Archiv der Mathematik",
volume
=
"Vol. 64",
number
=
"no 2",
pages
=
"132--138",
year
=
"1995",
}