@article{10_4064_aa_5_4_417_423,
     author = {B. Birch and H Swinnerton-Dyer},
     title = {Note on a problem of {Chowla}},
     journal = {Acta Arithmetica},
     pages = {417--423},
     publisher = {mathdoc},
     volume = {5},
     number = {4},
     year = {1959},
     doi = {10.4064/aa-5-4-417-423},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-5-4-417-423/}
}