@inproceedings{ernst1933robert,
title={Robert Hjalmar Mellin},
author={Ernst Lindelöf},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203102427284511},
booktitle={Acta Mathematica},
volume={61},
number={1},
pages={I-VI},
year={1933},
}