@article{1077470001, author = {Husemoller, Dale H.}, title = {Ramified coverings of Riemann surfaces}, journal = {Duke Math. J.}, volume = {29}, number = {1}, year = {1962}, pages = { 167-174}, language = {en}, url = {http://dml.mathdoc.fr/item/1077470001} }
Husemoller, Dale H. Ramified coverings of Riemann surfaces. Duke Math. J., Tome 29 (1962) no. 1, pp. 167-174. http://gdmltest.u-ga.fr/item/1077470001/