@article{MAN_1983__262_163724,
     author = {J.R. Hubbuck},
     title = {Hopf  {Structures} on {Stiefel} {Manifolds.}},
     journal = {Mathematische Annalen},
     pages = {529--548},
     publisher = {mathdoc},
     volume = {262},
     year = {1983},
     zbl = {0488.55007},
     url = {http://geodesic.mathdoc.fr/item/MAN_1983__262_163724/}
}