TY - JOUR AU - Natasha Bozovic TI - On Some Properties of Universal Groups JO - Mathematica balkanica PY - 1991 SP - 156 VL - 5 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MABA_1991_5_2_a8/ ID - MABA_1991_5_2_a8 ER -