TY  - JOUR
AU  - I.G. Rosenberg
TI  - Some Maximal Closed Classes of Operations on Infinite Sets.
JO  - Mathematische Annalen
PY  - 1974
SP  - 157
EP  - 164
VL  - 212
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAN_1974__212_182741/
ID  - MAN_1974__212_182741
ER  -