%0 Journal Article
%T Openings in Mathematics
%J Canadian mathematical bulletin
%D 1969
%P 704-704
%V 12
%N 5
%U http://geodesic.mathdoc.fr/articles/10.1017/S0008439500030964/
%R 10.1017/S0008439500030964
%F 10_1017_S0008439500030964