@inproceedings{ernst1903sur,
title={Sur une formule sommatoire générale},
author={Ernst Lindelöf},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203013692016131},
booktitle={Acta Mathematica},
volume={27},
number={1},
pages={305-311},
year={1903},
}