@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}, }