@article{Łenski:2009,
author
=
"W.Łenski and B.Roszak",
title
=
"On the rate of pointwise strong summability of Fourier series",
journal
=
"Demonstratio Mathematica",
volume
=
"Vol. 37",
number
=
"no 3",
pages
=
"601--610",
year
=
"2004",
}