%0 Journal Article %A I. Madsen %A Milgram J. %T The Universal Smooth Surgery Class. %J Commentarii mathematici Helvetici %D 1975 %P 281-310 %V 50 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1975__50_139625/ %F CMH_1975__50_139625