TY  - JOUR
TI  - Book received
JO  - Canadian mathematical bulletin
PY  - 1966
SP  - 135
EP  - 136
VL  - 9
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0008439500027557/
DO  - 10.1017/S0008439500027557
ID  - 10_1017_S0008439500027557
ER  -