@article{GDZPPN00205681X, title = {On the immersion of n-manifolds in (n+1)-space.}, journal = {Commentarii mathematici Helvetici}, volume = {30}, year = {1956}, pages = {275-284}, zbl = {0070.40202}, url = {http://dml.mathdoc.fr/item/GDZPPN00205681X} }
Milnor, John. On the immersion of n-manifolds in (n+1)-space.. Commentarii mathematici Helvetici, Tome 30 (1956) pp. 275-284. http://gdmltest.u-ga.fr/item/GDZPPN00205681X/