TY - JOUR AU - A. I. Budkin TI - Quasivarieties with Torsion-Free Nilpotent Groups JO - Algebra i logika PY - 2001 SP - 629 EP - 650 VL - 40 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AL_2001_40_6_a0/ LA - ru ID - AL_2001_40_6_a0 ER -