@article{DE_1971_7_6_a20,
     author = {V. I. Korobov},
     title = {The continuous dependence of the solution of an optimal control problem with free time on the initial data},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1120--1123},
     publisher = {mathdoc},
     volume = {7},
     number = {6},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1971_7_6_a20/}
}