%0 Journal Article %A McDuff, Dusa %T The structure of rational and ruled symplectic 4-manifolds %J Journal of the American Mathematical Society %D 1990 %P 679-712 %V 03 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1990-1049697-8/ %R 10.1090/S0894-0347-1990-1049697-8 %F 10_1090_S0894_0347_1990_1049697_8