@inproceedings{h.1889note,
title={Note sur les huit points d'intersection de trois surfaces du second ordre},
author={H. -G. Zeuthen},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108202948548331914},
booktitle={Acta Mathematica},
volume={12},
number={1},
pages={362-366},
year={1889},
}
H. -G. Zeuthen. Note sur les huit points d'intersection de trois surfaces du second ordre. 1889. Vol. 12. In Acta Mathematica. pp.362-366. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108202948548331914.