%0 Journal Article %A Schneiderman, Rob %A Teichner, Peter %T Higher order intersection numbers of 2–spheres in 4–manifolds %J Algebraic and Geometric Topology %D 2001 %P 1-29 %V 1 %N 1 %U http://geodesic.mathdoc.fr/articles/10.2140/agt.2001.1.1/ %R 10.2140/agt.2001.1.1 %F 10_2140_agt_2001_1_1