TY - JOUR TI - Ontario Mathematical Meetings JO - Canadian mathematical bulletin PY - 1968 SP - 146 EP - 150 VL - 11 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0008439500028782/ DO - 10.1017/S0008439500028782 ID - 10_1017_S0008439500028782 ER -