@inproceedings{n.1983a, title={A characterisation of Fuchsian groups of convergent type}, author={N. Th. Varopoulos}, url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203518567175419}, booktitle={Arkiv for Matematik}, volume={22}, number={1}, pages={293-307}, year={1983}, }