%0 Journal Article
%A Cramer, Timothy
%T Boolean Algebra Retracts
%J Canadian journal of mathematics
%D 1971
%P 339-344
%V 23
%N 2
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1971-034-3/
%R 10.4153/CJM-1971-034-3
%F 10_4153_CJM_1971_034_3