TY  - JOUR
TI  - Openings in Mathematics
JO  - Canadian mathematical bulletin
PY  - 1969
SP  - 704
EP  - 704
VL  - 12
IS  - 5
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0008439500030964/
DO  - 10.1017/S0008439500030964
ID  - 10_1017_S0008439500030964
ER  -