@article{Łenski:2013,
author
=
"W.Łenski",
title
=
"Pointwise Analog of the Stečkin Approximation Theorem",
journal
=
"Journal of Mathematics",
volume
=
"Vol. 2013",
pages
=
"1--8",
year
=
"2013",
note
=
"Hidawi Publishing Corporation",
}