@article{Łenski:2016,
author
=
"W.Łenski and B.Szal",
title
=
"On estimates of deviation of functions from matrix operators of their Fourier series by some expressions with r-differences of the entries",
journal
=
"Abstract and Applied Analysis",
volume
=
"Vol. 2016",
pages
=
"1--10",
year
=
"2016",
}