@article{GDZPPN002086247, title = {Submersions and Immersions of Manifolds.}, journal = {Inventiones mathematicae}, volume = {1}, year = {1966}, pages = {171-177}, zbl = {0146.19803}, url = {http://dml.mathdoc.fr/item/GDZPPN002086247} }
JAMES, I.; THOMAS, E. Submersions and Immersions of Manifolds.. Inventiones mathematicae, Tome 1 (1966) pp. 171-177. http://gdmltest.u-ga.fr/item/GDZPPN002086247/