TY  - JOUR
AU  - V. F. Dem'yanov
TI  - Second-order approximation for a nonsmooth function
JO  - Doklady Akademii Nauk
PY  - 1989
SP  - 529
EP  - 532
VL  - 309
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1989_309_3_a2/
LA  - ru
ID  - DAN_1989_309_3_a2
ER  -