@inproceedings{w.1903sur,
title={Sur l’intégration des différentielles binômes},
author={W. Kapteyn},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203013989208134},
booktitle={Acta Mathematica},
volume={27},
number={1},
pages={329-337},
year={1903},
}