MathSciDoc: An Archive for Mathematician ∫

@inproceedings{k.1887untersuchungen,
  title={Untersuchungen über die Normen komplexer Zahlen},
  author={K. Schwering},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108202944250606875},
  booktitle={Acta Mathematica},
  volume={11},
  number={1},
  pages={265-296},
  year={1887},
}