@inproceedings{e.1909sur, title={Sur les ensembles finis et le principe de l'induction complète}, author={E. Zermelo}, url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203021600862194}, booktitle={Acta Mathematica}, volume={32}, number={1}, pages={185-193}, year={1909}, }