TY - JOUR TI - Ontario Mathematical Meeting JO - Canadian mathematical bulletin PY - 1969 SP - 686 EP - 700 VL - 12 IS - 5 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0008439500030940/ DO - 10.1017/S0008439500030940 ID - 10_1017_S0008439500030940 ER -