@article{bwmeta1.element.bwnjournal-article-smv25i1p33bwm,
author = {G. Freud and S. Knapowski},
title = {On linear processes of approximation (III)},
journal = {Studia Mathematica},
volume = {25},
year = {1965},
pages = {373-384},
zbl = {0129.04603},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-smv25i1p33bwm}
}
Freud, G.; Knapowski, S. On linear processes of approximation (III). Studia Mathematica, Tome 25 (1965) pp. 373-384. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-smv25i1p33bwm/