@article{1077476399,
author = {Mitchell, Josephine},
title = {Convergence and $(C,1,1)$
summability of double orthogonal
series},
journal = {Duke Math. J.},
volume = {18},
number = {1},
year = {1951},
pages = { 211-219},
language = {en},
url = {http://dml.mathdoc.fr/item/1077476399}
}
Mitchell, Josephine. Convergence and $(C,1,1)$
summability of double orthogonal
series. Duke Math. J., Tome 18 (1951) no. 1, pp. 211-219. http://gdmltest.u-ga.fr/item/1077476399/