%0 Journal Article
%A Penna, Michael A.
%T On a Theorem of Sullivan
%J Canadian mathematical bulletin
%D 1978
%P 201-206
%V 21
%N 2
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1978-034-3/
%R 10.4153/CMB-1978-034-3
%F 10_4153_CMB_1978_034_3