%0 Journal Article %A Ib Madsen %A Melvin Rothenberg %T On the classification of G-spheres II: PL automorphism groups. %J Mathematica Scandinavica %D 1989 %P 161-218 %V 64 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MS2_1989__64_2_186112/ %F MS2_1989__64_2_186112