TY  - JOUR
AU  - D. I. Zaitsev
TI  - Nilpotent approximations of metabelian groups
JO  - Algebra i logika
PY  - 1981
SP  - 638
EP  - 653
VL  - 20
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1981_20_6_a2/
LA  - ru
ID  - AL_1981_20_6_a2
ER  -