@inproceedings{j.1950the, title={The rational solutions of the diophantine equation}, author={J. W. S. Cassels}, url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203127435790704}, booktitle={Acta Mathematica}, volume={82}, number={1}, pages={243-273}, year={1950}, }