TY  - JOUR
AU  - A. V. Arutyunov
TI  - Higher-order conditions in abnormal extremal problems with
JO  - Doklady Akademii Nauk
PY  - 1990
SP  - 521
EP  - 525
VL  - 315
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1990_315_3_a0/
LA  - ru
ID  - DAN_1990_315_3_a0
ER  -