TY - JOUR AU - Alireza Abdollahi TI - A Combinatorial Problem in Infinite Group JO - Bulletin of the Malaysian Mathematical Society PY - 2002 VL - 25 IS - 2 UR - http://geodesic.mathdoc.fr/item/BMMS_2002_25_2_a1/ ID - BMMS_2002_25_2_a1 ER -