@article{10_4064_aa_32_4_393_395,
     author = {R. Hall},
     title = {On the constant \ensuremath{\beta}(k) in {Rosser's} sieve},
     journal = {Acta Arithmetica},
     pages = {393--395},
     publisher = {mathdoc},
     volume = {32},
     number = {4},
     year = {1977},
     doi = {10.4064/aa-32-4-393-395},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-32-4-393-395/}
}