@inproceedings{bengt1967on,
title={On the central limit theorem in$R$_{k}},
author={Bengt von Bahr},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203437824454072},
booktitle={Arkiv for Matematik},
volume={7},
number={1},
pages={61-69},
year={1967},
}