TY  - JOUR
AU  - V. A. Srochko
TI  - An investigation of the second variation on singular controls
JO  - Differencialʹnye uravneniâ
PY  - 1974
SP  - 1050
EP  - 1066
VL  - 10
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1974_10_6_a7/
LA  - ru
ID  - DE_1974_10_6_a7
ER  -