%0 Journal Article %A Stefan Bauer %T A linearity theorem for group actions on spheres with applications to homotopy representations. %J Commentarii mathematici Helvetici %D 1989 %P 167-172 %V 64 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1989__64_1_140146/ %F CMH_1989__64_1_140146