@inproceedings{ingvar1970estimates,
title={Estimates for the Fourier transform of the characteristic function of a convex set},
author={Ingvar Svensson},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203445867124142},
booktitle={Arkiv for Matematik},
volume={9},
number={1},
pages={11-22},
year={1970},
}
Ingvar Svensson. Estimates for the Fourier transform of the characteristic function of a convex set. 1970. Vol. 9. In Arkiv for Matematik. pp.11-22. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203445867124142.