TY  - JOUR
AU  - V. V. Fedorchuk
TI  - Mappings which do not lower the dimension
JO  - Doklady Akademii Nauk
PY  - 1969
SP  - 54
EP  - 57
VL  - 185
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1969_185_1_a13/
LA  - ru
ID  - DAN_1969_185_1_a13
ER  -