@inproceedings{lars1990a,
title={A uniqueness theorem of Beurling for Fourier transform pairs},
author={Lars Hörmander},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203535352764559},
booktitle={Arkiv for Matematik},
volume={29},
number={1},
pages={237-240},
year={1990},
}