@article{1183531486, author = {Rodin, Burton}, title = {On the span of a Riemann surface}, journal = {Bull. Amer. Math. Soc.}, volume = {76}, number = {4}, year = {1970}, pages = { 340-341}, language = {en}, url = {http://dml.mathdoc.fr/item/1183531486} }
Rodin, Burton. On the span of a Riemann surface. Bull. Amer. Math. Soc., Tome 76 (1970) no. 4, pp. 340-341. http://gdmltest.u-ga.fr/item/1183531486/