%0 Journal Article %A Constantine Georgakis %T Double Fourier Series with Coefficients O (n m) -1. %J Mathematische Zeitschrift %D 1972 %P 184-186 %V 125 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1972__125_171700/ %F MZ_1972__125_171700