@article{bwmeta1.element.bwnjournal-article-smv23i1p2bwm,
author = {S. Balcerzyk},
title = {Power series as orthogonal expansions},
journal = {Studia Mathematica},
volume = {23},
year = {1963},
pages = {31-39},
zbl = {0129.28902},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-smv23i1p2bwm}
}
Balcerzyk, S. Power series as orthogonal expansions. Studia Mathematica, Tome 23 (1963) pp. 31-39. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-smv23i1p2bwm/