@article{bwmeta1.element.bwnjournal-article-smv25i1p20bwm,
author = {G. Freud and S. Knapowski},
title = {On linear processes of approximation (II)},
journal = {Studia Mathematica},
volume = {25},
year = {1965},
pages = {251-263},
zbl = {0129.04603},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-smv25i1p20bwm}
}
Freud, G.; Knapowski, S. On linear processes of approximation (II). Studia Mathematica, Tome 25 (1965) pp. 251-263. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-smv25i1p20bwm/