@article{GDZPPN002273551,
title = {On the polynomial and trigonometric approximation of measurable bounded functions on a finite interval},
journal = {Mathematische Annalen},
volume = {102},
year = {1930},
pages = {157-175},
zbl = {55.0754.05},
url = {http://dml.mathdoc.fr/item/GDZPPN002273551}
}
Shohat, J. On the polynomial and trigonometric approximation of measurable bounded functions on a finite interval. Mathematische Annalen, Tome 102 (1930) pp. 157-175. http://gdmltest.u-ga.fr/item/GDZPPN002273551/