@article{JRAM_1975__0274_0275_151577,
     author = {Christopher Hooley},
     title = {On the {Barban-Davenport-Halberstam} theorem. {I.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {206--223},
     publisher = {mathdoc},
     volume = {0274_0275},
     year = {1975},
     zbl = {0304.10027},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1975__0274_0275_151577/}
}