%0 Journal Article %A S. Chowla %A I. Kessler %A M. Livingston %T On character sums and the non-vanishing for s > 0 of Dirichlet L-series belonging to real odd characters χ %J Acta Arithmetica %D 1977 %P 81-87 %V 33 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-33-1-81-87/ %R 10.4064/aa-33-1-81-87 %G en %F 10_4064_aa_33_1_81_87