TY - JOUR TI - Solutions JO - Canadian mathematical bulletin PY - 1963 SP - 281 EP - 286 VL - 6 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0008439500026527/ DO - 10.1017/S0008439500026527 ID - 10_1017_S0008439500026527 ER -