TY  - JOUR
AU  - Šulka, Robert
TI  - The minimal right $A$-ideal of the free semigroup on a countable set
JO  - Mathematica slovaca
PY  - 1982
SP  - 301
EP  - 304
VL  - 32
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MASLO_1982__32_3_a10/
LA  - en
ID  - MASLO_1982__32_3_a10
ER  -