@article{JRAM_1967__225_150785,
     author = {Christopher Hooley},
     title = {On {Artin's} conjecture.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {209--220},
     year = {1967},
     volume = {225},
     zbl = {0221.10048},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1967__225_150785/}
}