@inproceedings{bengt1969a,
title={A note on asymptotic normality of sums of higher-dimensionally indexed random variables},
author={Bengt Rosén},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203443084567118},
booktitle={Arkiv for Matematik},
volume={8},
number={1},
pages={33-43},
year={1969},
}
Bengt Rosén. A note on asymptotic normality of sums of higher-dimensionally indexed random variables. 1969. Vol. 8. In Arkiv for Matematik. pp.33-43. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203443084567118.