TY  - JOUR
TI  - Openings in Mathematics
JO  - Canadian mathematical bulletin
PY  - 1959
SP  - 147
EP  - 147
VL  - 2
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0008439500025224/
DO  - 10.1017/S0008439500025224
ID  - 10_1017_S0008439500025224
ER  -