TY  - JOUR
AU  - S. A. Gurchenkov
TI  - The lattice of varieties of rigid lattice-ordered groups does not have the covering property
JO  - Matematičeskie zametki
PY  - 1990
SP  - 35
EP  - 40
VL  - 47
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1990_47_4_a4/
LA  - ru
ID  - MZM_1990_47_4_a4
ER  -