@article{10_4064_aa_30_1_1_3,
     author = {S. Chowla and D. Goldfeld},
     title = {A remark on certain {Hecke} {L-series} which are non-negative on the real axis},
     journal = {Acta Arithmetica},
     pages = {1--3},
     publisher = {mathdoc},
     volume = {30},
     number = {1},
     year = {1976},
     doi = {10.4064/aa-30-1-1-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-30-1-1-3/}
}