%0 Journal Article
%T Ontario Mathematical Meetings - Winter, 1969
%J Canadian mathematical bulletin
%D 1969
%P 116-127
%V 12
%N 1
%U http://geodesic.mathdoc.fr/articles/10.1017/S0008439500030228/
%R 10.1017/S0008439500030228
%F 10_1017_S0008439500030228