%0 Journal Article
%A Hoo, C. S.
%T Maps which Induce the Zero Map on Homotopy
%J Canadian journal of mathematics
%D 1968
%P 759-768
%V 20
%N 1
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1968-076-7/
%R 10.4153/CJM-1968-076-7
%F 10_4153_CJM_1968_076_7