%0 Journal Article
%A Kannappan, Pl.
%A Taylor, M. A.
%T On Closure Conditions
%J Canadian mathematical bulletin
%D 1976
%P 291-296
%V 19
%N 3
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1976-045-6/
%R 10.4153/CMB-1976-045-6
%F 10_4153_CMB_1976_045_6