TY  - JOUR
AU  - N. V. Efimov
TI  - Differential criteria for homeomorphism of certain mappings with

JO  - Sbornik. Mathematics
PY  - 1968
SP  - 475
EP  - 488
VL  - 5
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1968_5_4_a0/
LA  - en
ID  - SM_1968_5_4_a0
ER  -