TY  - JOUR
AU  - T. K. Melikov
TI  - Recurrence conditions for the optimality of singular controls in
JO  - Doklady Akademii Nauk
PY  - 1992
SP  - 843
EP  - 846
VL  - 322
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1992_322_5_a5/
LA  - ru
ID  - DAN_1992_322_5_a5
ER  -