@article{1077310571, author = {Sakai, Makoto}, title = {On the vanishing of the span of a Riemann surface}, journal = {Duke Math. J.}, volume = {41}, number = {1}, year = {1974}, pages = { 497-510}, language = {en}, url = {http://dml.mathdoc.fr/item/1077310571} }
Sakai, Makoto. On the vanishing of the span of a Riemann surface. Duke Math. J., Tome 41 (1974) no. 1, pp. 497-510. http://gdmltest.u-ga.fr/item/1077310571/