@article{10_4064_aa_11_2_217_240,
     author = {W. Jurkat and H. Richert},
     title = {An improvement of {Selberg's} sieve method {I}},
     journal = {Acta Arithmetica},
     pages = {217--240},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {1965},
     doi = {10.4064/aa-11-2-217-240},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-11-2-217-240/}
}