%0 Journal Article
%T Problems for Solution
%J Canadian mathematical bulletin
%D 1969
%P 91-91
%V 12
%N 1
%U http://geodesic.mathdoc.fr/articles/10.1017/S000843950002988X/
%R 10.1017/S000843950002988X
%F 10_1017_S000843950002988X