TY  - JOUR
AU  - B. M. Vernikov
TI  - Dualities in lattices of semigroup varieties.
JO  - Semigroup forum
PY  - 1990
SP  - 59
EP  - 76
VL  - 40
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1990__40_1_135004/
ID  - SF_1990__40_1_135004
ER  -