@inproceedings{b.1956die, title={Die Reduktionstheorie Der Positiven Quadratischen Formen}, author={B. L. van der Waerden}, url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203146124467841}, booktitle={Acta Mathematica}, volume={96}, number={1}, pages={265-309}, year={1956}, }