%0 Journal Article
%T Problems for Solution
%J Canadian mathematical bulletin
%D 1972
%P 454-460
%V 15
%N 3
%U http://geodesic.mathdoc.fr/articles/10.1017/S0008439500031465/
%R 10.1017/S0008439500031465
%F 10_1017_S0008439500031465