@article{GDZPPN002097230, title = {A Counterexample to a Conjecture of Steenrod.}, journal = {Inventiones mathematicae}, volume = {64}, year = {1981}, pages = {171-174}, zbl = {0477.55007}, url = {http://dml.mathdoc.fr/item/GDZPPN002097230} }
Carlsson, Gunnar. A Counterexample to a Conjecture of Steenrod.. Inventiones mathematicae, Tome 64 (1981) pp. 171-174. http://gdmltest.u-ga.fr/item/GDZPPN002097230/