TY - JOUR AU - A. I. Budkin TI - Independent axiomatizability of quasivarieties of torsion-free nilpotent groups JO - Algebra i logika PY - 2021 SP - 123 EP - 136 VL - 60 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AL_2021_60_2_a0/ LA - ru ID - AL_2021_60_2_a0 ER -