TY  - JOUR
AU  - T. Papazyan
TI  - Filters and semigroup properties.
JO  - Semigroup forum
PY  - 1990
SP  - 329
EP  - 338
VL  - 41
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1990__41_2_135057/
ID  - SF_1990__41_2_135057
ER  -