@inproceedings{r.1987a, title={A new iterative method in Waring's problem}, author={R. C. Vaughan}, url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203311803879426}, booktitle={Acta Mathematica}, volume={162}, number={1}, pages={1-71}, year={1987}, }