TY - JOUR TI - Solution by S. Spital, California State Poly. College JO - Canadian mathematical bulletin PY - 1965 SP - 113 EP - 116 VL - 8 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0008439500024334/ DO - 10.1017/S0008439500024334 ID - 10_1017_S0008439500024334 ER -