TY  - JOUR
AU  - N. N. Petrov
TI  - The correctness of a time-optimality problem
JO  - Differencialʹnye uravneniâ
PY  - 1977
SP  - 1974
EP  - 1980
VL  - 13
IS  - 11
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1977_13_11_a8/
LA  - ru
ID  - DE_1977_13_11_a8
ER  -