TY  - JOUR
AU  - N. V. Bayanova
TI  - Coverings in the lattice of varieties of $l$-groups
JO  - Algebra i logika
PY  - 1998
SP  - 253
EP  - 269
VL  - 37
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1998_37_3_a0/
LA  - ru
ID  - AL_1998_37_3_a0
ER  -