%0 Journal Article %A T. Fryska %T On a theorem of G. Halász and P. Turán %J Acta Arithmetica %D 1976 %P 343-354 %V 31 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-31-4-343-354/ %R 10.4064/aa-31-4-343-354 %G de %F 10_4064_aa_31_4_343_354