@article{DE_1978_14_3_a2,
     author = {T. R. Gichev},
     title = {Correctness of an optimal control problem with a variable right end and an integral quadratic efficiency criterion},
     journal = {Differencialʹnye uravneni\^a},
     pages = {418--424},
     publisher = {mathdoc},
     volume = {14},
     number = {3},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1978_14_3_a2/}
}