@article{2018, author = {Samelson, Hans}, title = {A theorem on differentiable manifolds}, journal = {Portugaliae mathematica}, volume = {10}, year = {1951}, pages = {129-133}, zbl = {0054.07202}, mrnumber = {0044882}, language = {en}, url = {http://dml.mathdoc.fr/item/2018} }
Samelson, Hans. A theorem on differentiable manifolds. Portugaliae mathematica, Tome 10 (1951) pp. 129-133. http://gdmltest.u-ga.fr/item/2018/