@article{1029000681,
author = {Goldstein, Myron},
title = {The span of a Riemann surface.},
journal = {Michigan Math. J.},
volume = {18},
number = {1},
year = {1971},
pages = { 223-224},
language = {en},
url = {http://dml.mathdoc.fr/item/1029000681}
}
Goldstein, Myron. The span of a Riemann surface.. Michigan Math. J., Tome 18 (1971) no. 1, pp. 223-224. http://gdmltest.u-ga.fr/item/1029000681/