@inproceedings{john1977quadratic,
title={Quadratic polynomials and quadratic forms},
author={John Friedlander, and Henryk Iwaniec},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203246313100240},
booktitle={Acta Mathematica},
volume={141},
number={1},
pages={1-15},
year={1977},
}