@inproceedings{horst1953knoten,
title={Knoten und Vollringe},
author={Horst Schubert},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203138385099785},
booktitle={Acta Mathematica},
volume={90},
number={1},
pages={131-286},
year={1953},
}