TY - JOUR TI - Solutions JO - Canadian mathematical bulletin PY - 1960 SP - 189 EP - 190 VL - 3 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0008439500025467/ DO - 10.1017/S0008439500025467 ID - 10_1017_S0008439500025467 ER -