@article{bwmeta1.element.bwnjournal-article-bcpv4i1p213bwm,
author = {Schumaker, Larry},
title = {Lower bounds for spline approximation},
journal = {Banach Center Publications},
volume = {4},
year = {1979},
pages = {213-223},
zbl = {0418.41005},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-bcpv4i1p213bwm}
}
Schumaker, Larry. Lower bounds for spline approximation. Banach Center Publications, Tome 4 (1979) pp. 213-223. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-bcpv4i1p213bwm/