%0 Journal Article %A AUREL WINTNER %T The theorem of Eneström and the extremal functions of Landau-Schur %J Mathematica Scandinavica %D 1957 %P 236-240 %V 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MS2_1957__5_165663/ %F MS2_1957__5_165663