@article{GDZPPN002187736,
title = {Convergence factors of Fourier series of summable functions.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {258},
year = {1973},
pages = {183-185},
zbl = {0264.42007},
url = {http://dml.mathdoc.fr/item/GDZPPN002187736}
}
Husain, Syed A. Convergence factors of Fourier series of summable functions.. Journal für die reine und angewandte Mathematik, Tome 258 (1973) pp. 183-185. http://gdmltest.u-ga.fr/item/GDZPPN002187736/