@article{GDZPPN002064804, title = {Proper holomorphic mappings between circular domains.}, journal = {Commentarii mathematici Helvetici}, volume = {57}, year = {1982}, pages = {532-538}, zbl = {0511.32013}, url = {http://dml.mathdoc.fr/item/GDZPPN002064804} }
Bell, Steven R. Proper holomorphic mappings between circular domains.. Commentarii mathematici Helvetici, Tome 57 (1982) pp. 532-538. http://gdmltest.u-ga.fr/item/GDZPPN002064804/