TY  - JOUR
AU  - N. Hindman
AU  - A.T. Lisan
TI  - Points very close to the smallest ideal of ßS.
JO  - Semigroup forum
PY  - 1994
SP  - 137
EP  - 142
VL  - 49
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1994__49_2_135342/
ID  - SF_1994__49_2_135342
ER  -