@article{10_4153_CMB_1986_003_8,
     author = {Glover, Henry and Homer, William},
     title = {Metastable {Immersion,} {Span} and the {Two-type} of a {Manifold}},
     journal = {Canadian mathematical bulletin},
     pages = {20--24},
     year = {1986},
     volume = {29},
     number = {1},
     doi = {10.4153/CMB-1986-003-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1986-003-8/}
}