TY - JOUR AU - MacHenry, Trueman TI - On the Invariance of a Quotient Group of the Center of F/[R, R] JO - Canadian mathematical bulletin PY - 1969 SP - 653 EP - 660 VL - 12 IS - 5 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1969-084-6/ DO - 10.4153/CMB-1969-084-6 ID - 10_4153_CMB_1969_084_6 ER -