@inproceedings{e.1887über,
title={Über orthogonale substitutionen},
author={E. Netto},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108202946511716896},
booktitle={Acta Mathematica},
volume={9},
number={1},
pages={295-300},
year={1887},
}