%0 Journal Article %A S. Chowla %A D. Goldfeld %T A remark on certain Hecke L-series which are non-negative on the real axis %J Acta Arithmetica %D 1976 %P 1-3 %V 30 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-30-1-1-3/ %R 10.4064/aa-30-1-1-3 %G en %F 10_4064_aa_30_1_1_3