Editing Whitney immersion theorem (section)

== References ==
* {{cite journal
|doi=10.2307/1971304
|first=Ralph L.
|last=Cohen
|author-link=Ralph Louis Cohen
|title=The immersion conjecture for differentiable manifolds
|journal=[[Annals of Mathematics]]
|year=1985
|pages=237–328
|jstor=1971304
|volume=122
|issue=2
|mr=0808220
}}
* {{cite journal | last=Massey | first=William S. | author-link=William S. Massey| title=On the Stiefel-Whitney classes of a manifold | journal=[[American Journal of Mathematics]] | volume=82 | issue=1 | year=1960 | doi=10.2307/2372878 | pages=92–102 | mr=0111053|jstor=2372878}}