TY  - JOUR
AU  - I. I. Parovichenko
TI  - Some constructions of~set-theoretical operations
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1979
SP  - 92
EP  - 102
VL  - 34
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1979_34_6_a12/
LA  - en
ID  - RM_1979_34_6_a12
ER  -