%0 Journal Article %A Rob Schneiderman %A Peter Teichner %T The group of disjoint 2-spheres in 4-space %J Annals of mathematics %D 2019 %P 669-750 %V 190 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4007/annals.2019.190.3.1/ %R 10.4007/annals.2019.190.3.1 %G en %F 10_4007_annals_2019_190_3_1