@inproceedings{n.1911fractions, title={Fractions continues et différences réciproques}, author={N. E. Nörlund}, url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203023262139207}, booktitle={Acta Mathematica}, volume={34}, number={1}, pages={1-108}, year={1911}, }