@article{IM_1982__70_142979,
     author = {Ib Madsen},
     title = {Homology {Operations} in {G/TOP.}},
     journal = {Inventiones mathematicae},
     pages = {341--368},
     year = {1982},
     volume = {70},
     url = {http://geodesic.mathdoc.fr/item/IM_1982__70_142979/}
}