@article{1183502564,
author = {Hill, J. D.},
title = {On perfect summability of double sequences},
journal = {Bull. Amer. Math. Soc.},
volume = {46},
number = {11},
year = {1940},
pages = { 327-331},
language = {en},
url = {http://dml.mathdoc.fr/item/1183502564}
}
Hill, J. D. On perfect summability of double sequences. Bull. Amer. Math. Soc., Tome 46 (1940) no. 11, pp. 327-331. http://gdmltest.u-ga.fr/item/1183502564/