@article{MAN_1981__256_163523,
     author = {J.C. Alexander},
     title = {On the {De} {Rham} {Invariant} of a {Fibered} (4r + {l)-Dimensional} {Orientable} {Manifold.}},
     journal = {Mathematische Annalen},
     pages = {429--438},
     publisher = {mathdoc},
     volume = {256},
     year = {1981},
     zbl = {0444.57015},
     url = {http://geodesic.mathdoc.fr/item/MAN_1981__256_163523/}
}