TY  - JOUR
TI  - Preface
JO  - Canadian mathematical bulletin
PY  - 1965
SP  - 149
EP  - 150
VL  - 8
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0008439500024607/
DO  - 10.1017/S0008439500024607
ID  - 10_1017_S0008439500024607
ER  -