TY  - JOUR
AU  - I. D. Stupina
TI  - Certain properties of $R$- and $R^c$-operations and projective operations, over uncountable systems of sets, 

JO  - Doklady Akademii Nauk
PY  - 1970
SP  - 1248
EP  - 1250
VL  - 193
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1970_193_6_a9/
LA  - ru
ID  - DAN_1970_193_6_a9
ER  -