@article{IM_1981__64_142818,
     author = {Gunnar Carlsson},
     title = {A {Counterexample} to a {Conjecture} of {Steenrod.}},
     journal = {Inventiones mathematicae},
     pages = {171--174},
     publisher = {mathdoc},
     volume = {64},
     year = {1981},
     zbl = {0477.55007},
     url = {http://geodesic.mathdoc.fr/item/IM_1981__64_142818/}
}