TY  - JOUR
AU  - Vera Trnkova
TI  - On the closure of classes of spaces under $\omega$-mappings
JO  - Doklady Akademii Nauk
PY  - 1964
SP  - 272
EP  - 274
VL  - 156
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1964_156_2_a9/
LA  - ru
ID  - DAN_1964_156_2_a9
ER  -