MathSciDoc: An Archive for Mathematician ∫

@inproceedings{bengt1952on,
  title={On the Diophantine equation$u$^{2}−$Dv$^{2}=±4$N$},
  author={Bengt Stolt},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203415487795880},
  booktitle={Arkiv for Matematik},
  volume={2},
  number={2},
  pages={251-268},
  year={1952},
}