TY  - JOUR
AU  - Pastijn, Francis
TI  - A theorem concerning the restriction of the $\cal D$-structure of a semigroup $S$ to a subsemigroup of $S$
JO  - Mathematica slovaca
PY  - 1976
SP  - 19
EP  - 22
VL  - 26
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MASLO_1976__26_1_a1/
LA  - en
ID  - MASLO_1976__26_1_a1
ER  -