TY  - JOUR
AU  - A. M. Rubinov
TI  - Approximation of multivalued mappings and the differentiability of
JO  - Doklady Akademii Nauk
PY  - 1987
SP  - 269
EP  - 272
VL  - 292
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1987_292_2_a1/
LA  - ru
ID  - DAN_1987_292_2_a1
ER  -