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@article{CMH_1980__55_139838, author = {I. Madsen and L.R. Taylor and B. Williams}, title = {Tangential homotopy equivalences.}, journal = {Commentarii mathematici Helvetici}, pages = {445--484}, publisher = {mathdoc}, volume = {55}, year = {1980}, zbl = {0451.57018}, url = {http://geodesic.mathdoc.fr/item/CMH_1980__55_139838/} }
I. Madsen; L.R. Taylor; B. Williams. Tangential homotopy equivalences.. Commentarii mathematici Helvetici, Tome 55 (1980), pp. 445-484. http://geodesic.mathdoc.fr/item/CMH_1980__55_139838/