@inproceedings{christopher1963on,
title={On the number of divisors of quadratic polynomials},
author={Christopher Hooley},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203202236992961},
booktitle={Acta Mathematica},
volume={110},
number={1},
pages={97-114},
year={1963},
}