@inproceedings{gösta1954on,
title={On the exceptional group of a Weierstrass curve in an algebraic field},
author={Gösta Bergman},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203139284115792},
booktitle={Acta Mathematica},
volume={91},
number={1},
pages={113-142},
year={1954},
}
Gösta Bergman. On the exceptional group of a Weierstrass curve in an algebraic field. 1954. Vol. 91. In Acta Mathematica. pp.113-142. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203139284115792.