TY  - JOUR
AU  - I. I. Parovichenko
TI  - On the topological strength of set-theoretic operations
JO  - Sbornik. Mathematics
PY  - 1989
SP  - 393
EP  - 404
VL  - 63
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1989_63_2_a8/
LA  - en
ID  - SM_1989_63_2_a8
ER  -