@article{IM_1966__2_141850,
     author = {I. JAMES and E. THOMAS},
     title = {Submersions and {Immersions} of {Manifolds.}},
     journal = {Inventiones mathematicae},
     pages = {171--177},
     publisher = {mathdoc},
     volume = {2},
     year = {1966},
     zbl = {0146.19803},
     url = {http://geodesic.mathdoc.fr/item/IM_1966__2_141850/}
}