%0 Journal Article %A T. Cochran %T 4-Manifolds which embed in IR6 but not in IR5, and Seifert manifolds for fibered knots. %J Inventiones mathematicae %D 1984 %P 173-184 %V 77 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1984__77_143144/ %F IM_1984__77_143144