@article{DE_1983_19_11_a8,
     author = {N. N. Subbotina},
     title = {Universal optimal strategies in positional differential games},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1890--1896},
     publisher = {mathdoc},
     volume = {19},
     number = {11},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1983_19_11_a8/}
}