%0 Journal Article
%T Openings in Mathematics
%J Canadian mathematical bulletin
%D 1968
%P 653-654
%V 11
%N 4
%U http://geodesic.mathdoc.fr/articles/10.1017/S0008439500029878/
%R 10.1017/S0008439500029878
%F 10_1017_S0008439500029878