TY  - JOUR
AU  - E. S. Levitin
TI  - On the perturbation theory of nonsmooth extremal problems with constraints
JO  - Doklady Akademii Nauk
PY  - 1975
SP  - 1260
EP  - 1263
VL  - 224
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1975_224_6_a5/
LA  - ru
ID  - DAN_1975_224_6_a5
ER  -