@article{GDZPPN002285886, title = {Remarks on a uniqueness theorem for closed surfaces.}, journal = {Mathematische Annalen}, volume = {133}, year = {1957}, pages = {426-430}, zbl = {0090.38001}, url = {http://dml.mathdoc.fr/item/GDZPPN002285886} }
Hartman, Ph. Remarks on a uniqueness theorem for closed surfaces.. Mathematische Annalen, Tome 133 (1957) pp. 426-430. http://gdmltest.u-ga.fr/item/GDZPPN002285886/