%0 Journal Article %A Frenck, Georg %A Reinhold, Jens %T Characteristic numbers of manifold bundles over spheres and positive curvature via block bundles %J Forum of Mathematics, Sigma %D 2025 %P e138 %V 13 %N 1 %U http://geodesic.mathdoc.fr/articles/10.1017/fms.2025.10054/ %R 10.1017/fms.2025.10054 %F 10_1017_fms_2025_10054