TY  - JOUR
AU  - A. N. Zubkov
TI  - Varieties of pro-$p$-groups of second-order matrices
JO  - Algebra i logika
PY  - 1990
SP  - 430
EP  - 451
VL  - 29
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1990_29_4_a3/
LA  - ru
ID  - AL_1990_29_4_a3
ER  -