@inproceedings{j.1932diophantische,
title={Diophantische Ungleichungen},
author={J. G. van der Corput},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203100752112501},
booktitle={Acta Mathematica},
volume={59},
number={1},
pages={209-328},
year={1932},
}