@inproceedings{henry1952spectral,
title={Spectral synthesis of bounded functions},
author={Henry Helson},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203413214443865},
booktitle={Arkiv for Matematik},
volume={1},
number={6},
pages={497-502},
year={1952},
}