%0 Journal Article
%T P 3.
%J Canadian mathematical bulletin
%D 1959
%P 45-45
%V 2
%N 1
%U http://geodesic.mathdoc.fr/articles/10.1017/S0008439500024930/
%R 10.1017/S0008439500024930
%F 10_1017_S0008439500024930