%0 Journal Article
%A Milgram, R. James
%A Zvengrowski, Peter
%T Even Whitehead Squares are Not Projective
%J Canadian journal of mathematics
%D 1977
%P 957-962
%V 29
%N 5
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1977-096-9/
%R 10.4153/CJM-1977-096-9
%F 10_4153_CJM_1977_096_9