@article{1077490341,
author = {Hill, J. D.},
title = {On perfect methods of summability},
journal = {Duke Math. J.},
volume = {3},
number = {1},
year = {1937},
pages = { 702-714},
language = {en},
url = {http://dml.mathdoc.fr/item/1077490341}
}
Hill, J. D. On perfect methods of summability. Duke Math. J., Volume 3 (1937) no. 1, pp. 702-714. http://gdmltest.u-ga.fr/item/1077490341/