%0 Journal Article %A G.M. Pettersen %T Summability Methods and Unbounded Sequences. %J Mathematica Scandinavica %D 1959 %P 170-176 %V 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/MS2_1959__7_165711/ %F MS2_1959__7_165711