@article{Odyniec:2009,
author
=
"W.Odyniec",
title
=
"A lemma of Banach on peak functions",
journal
=
"Annales Societatis Mathematicae Polonae : Commentationes Mathematicae",
volume
=
"Vol. 21",
pages
=
"195--201",
year
=
"1979",
}