%0 Journal Article %A I. Madsen %A L.R. Taylor %A B. Williams %T Tangential homotopy equivalences. %J Commentarii mathematici Helvetici %D 1980 %P 445-484 %V 55 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1980__55_139838/ %F CMH_1980__55_139838