@inproceedings{e.1926les,
title={Les groupes d'holonomie des espaces généralisés},
author={E. Cartan},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203043769782367},
booktitle={Acta Mathematica},
volume={48},
number={1},
pages={1-42},
year={1926},
}