%0 Journal Article %A D.M. Segal %T On the Symplectic Cobordism Ring. %J Commentarii mathematici Helvetici %D 1970 %P 159-169 %V 45 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1970__45_139430/ %F CMH_1970__45_139430