@article{MAN_1981__255_182845,
     author = {R.E. Stong and Howard Hiller},
     title = {Immersion {Dimension} for {Real} {Grassmannians:}},
     journal = {Mathematische Annalen},
     pages = {361--368},
     publisher = {mathdoc},
     volume = {255},
     year = {1981},
     zbl = {0439.51014},
     url = {http://geodesic.mathdoc.fr/item/MAN_1981__255_182845/}
}