TY - JOUR AU - E. M. Kovyazina TI - Butler groups with a single $\tau$-adic relation JO - Matematičeskie zametki PY - 1996 SP - 882 EP - 887 VL - 60 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1996_60_6_a9/ LA - ru ID - MZM_1996_60_6_a9 ER -