@article{DE_1983_19_4_a25,
     author = {G. A. Kurina},
     title = {On a certain classical singularly perturbed problem of optimal control},
     journal = {Differencialʹnye uravneni\^a},
     pages = {710--711},
     publisher = {mathdoc},
     volume = {19},
     number = {4},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1983_19_4_a25/}
}