TY  - JOUR
AU  - M. I. Zelikin
TI  - Conditions for optimality of singular trajectories in the problem of minimizing a curvilinear integral
JO  - Doklady Akademii Nauk
PY  - 1982
SP  - 528
EP  - 531
VL  - 267
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1982_267_3_a2/
LA  - ru
ID  - DAN_1982_267_3_a2
ER  -