@inproceedings{m.1903deux,
title={Deux théorèmes d’Abel sur la convergence des séries},
author={M. Hadamard},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203012951325124},
booktitle={Acta Mathematica},
volume={27},
number={1},
pages={177-183},
year={1903},
}