@inproceedings{p.1931ein, title={Ein Approximationssatz für die Fuchsschen Gruppen}, author={P. J. Myrberg}, url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203058355273481}, booktitle={Acta Mathematica}, volume={57}, number={1}, pages={389-409}, year={1931}, }