@inproceedings{arne1966on,
title={On the closure of characters and the zeros of entire functions},
author={Arne Beurling, and Paul Malliavin},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203211368015032},
booktitle={Acta Mathematica},
volume={118},
number={1},
pages={79-93},
year={1966},
}
Arne Beurling, and Paul Malliavin. On the closure of characters and the zeros of entire functions. 1966. Vol. 118. In Acta Mathematica. pp.79-93. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203211368015032.