@inproceedings{trygve1962on,
title={On the number of representations of an A-number in an algebraic field},
author={Trygve Nagell},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203428094899991},
booktitle={Arkiv for Matematik},
volume={4},
number={5},
pages={467-478},
year={1962},
}
Trygve Nagell. On the number of representations of an A-number in an algebraic field. 1962. Vol. 4. In Arkiv for Matematik. pp.467-478. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203428094899991.