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@article{CMH_1979__54_139794, author = {E.H., Jr. Brown and F.P. Peterson}, title = {A universal space for normal bundles of n-manifolds.}, journal = {Commentarii mathematici Helvetici}, pages = {405--430}, publisher = {mathdoc}, volume = {54}, year = {1979}, zbl = {0415.55011}, url = {http://geodesic.mathdoc.fr/item/CMH_1979__54_139794/} }
E.H., Jr. Brown; F.P. Peterson. A universal space for normal bundles of n-manifolds.. Commentarii mathematici Helvetici, Tome 54 (1979), pp. 405-430. http://geodesic.mathdoc.fr/item/CMH_1979__54_139794/