TY  - JOUR
AU  - M. S. Nikol'skii
TI  - Approximation of convex-valued continuous multivalued mappings
JO  - Doklady Akademii Nauk
PY  - 1989
SP  - 1047
EP  - 1050
VL  - 308
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1989_308_5_a4/
LA  - ru
ID  - DAN_1989_308_5_a4
ER  -