%0 Journal Article
%T Montreal, Mathematical Colloquium
%J Canadian mathematical bulletin
%D 1958
%P 146-147
%V 1
%N 2
%U http://geodesic.mathdoc.fr/articles/10.1017/S000843950002484X/
%R 10.1017/S000843950002484X
%F 10_1017_S000843950002484X