%0 Journal Article
%A Mather, Michael
%T Pull-Backs in Homotopy Theory
%J Canadian journal of mathematics
%D 1976
%P 225-263
%V 28
%N 2
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1976-029-0/
%R 10.4153/CJM-1976-029-0
%F 10_4153_CJM_1976_029_0