@inproceedings{arthur1958a,
  title={A converse of Cauchy's theorem and applications to extremal problems},
  author={Arthur H. Read},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203148651480861},
  booktitle={Acta Mathematica},
  volume={100},
  number={1},
  pages={1-22},
  year={1958},
}
             
            
                
Arthur H. Read. A converse of Cauchy's theorem and applications to extremal problems. 1958. Vol. 100. In Acta Mathematica. pp.1-22. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203148651480861.