TY - JOUR AU - Marcus, Marvin TI - A Note an a Group Defined by a Quadratic Form JO - Canadian mathematical bulletin PY - 1960 SP - 143 EP - 148 VL - 3 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1960-017-4/ DO - 10.4153/CMB-1960-017-4 ID - 10_4153_CMB_1960_017_4 ER -