TY  - JOUR
AU  - I. T. Skorodinskii
TI  - Investigation of the third variation of a functional on singular controls
JO  - Differencialʹnye uravneniâ
PY  - 1980
SP  - 1438
EP  - 1444
VL  - 16
IS  - 8
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1980_16_8_a9/
LA  - ru
ID  - DE_1980_16_8_a9
ER  -