@inproceedings{k.1929on, title={On the boundary behaviour of elliptic modular functions}, author={K. Ananda-rau}, url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203050543789423}, booktitle={Acta Mathematica}, volume={52}, number={1}, pages={143-168}, year={1929}, }