@article{1077477039,
author = {Lorch, Lee},
title = {The Lebesgue constants for $(E,1)$
summation of Fourier series},
journal = {Duke Math. J.},
volume = {19},
number = {1},
year = {1952},
pages = { 45-50},
language = {en},
url = {http://dml.mathdoc.fr/item/1077477039}
}
Lorch, Lee. The Lebesgue constants for $(E,1)$ summation of Fourier series. Duke Math. J., Tome 19 (1952) no. 1, pp. 45-50. http://gdmltest.u-ga.fr/item/1077477039/