TY  - JOUR
AU  - N. P. Osmolovskii
TI  - Higher-order necessary and sufficient conditions for Pontryagin
JO  - Doklady Akademii Nauk
PY  - 1988
SP  - 1052
EP  - 1056
VL  - 303
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1988_303_5_a5/
LA  - ru
ID  - DAN_1988_303_5_a5
ER  -