TY  - JOUR
AU  - M. M. Choban
TI  - Many-valued mappings and certain related questions
JO  - Doklady Akademii Nauk
PY  - 1970
SP  - 293
EP  - 296
VL  - 190
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1970_190_2_a11/
LA  - ru
ID  - DAN_1970_190_2_a11
ER  -