TY  - JOUR
AU  - E. Z. Dyment
TI  - Two theorems on finite unions of regressive immune sets
JO  - Matematičeskie zametki
PY  - 1977
SP  - 259
EP  - 269
VL  - 21
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1977_21_2_a14/
LA  - ru
ID  - MZM_1977_21_2_a14
ER  -