%0 Journal Article %A Sylvain E. Cappell %A Julius L. Shaneson %T Class numbers and periodic smooth maps. %J Commentarii mathematici Helvetici %D 1983 %P 167-185 %V 58 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1983__58_139936/ %F CMH_1983__58_139936