@article{Matkowski:2009,
author
=
"J.Matkowski",
title
=
"On subadditive functions and \psi-additive mappings",
journal
=
"Central European Journal of Mathematics",
volume
=
"Vol. 1",
number
=
"no 4",
pages
=
"435--440",
year
=
"2003",
note
=
"<a href="http://www.cesj.com/mathematics.html">http://www.cesj.com/mathematics.html</a>, [dostęp: 23-10-2003]",
}