%0 Journal Article
%A Peter Orlik
%T Homotopy 4-Spheres Have Little Symmetry.
%J Mathematica Scandinavica
%D 1973
%P 275-278
%V 33
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MS2_1973__33_166331/
%F MS2_1973__33_166331