@inproceedings{m.1887un,
title={Un théorème de la théorie des séries},
author={M. Lerch},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108202941387311848},
booktitle={Acta Mathematica},
volume={10},
number={1},
pages={87-88},
year={1887},
}