@article{DE_1983_19_6_a0,
     author = {A. V. Arutyunov},
     title = {The first condition in {L.} {S.~Pontryagin's} article: {{\textquotedblleft}On} the theory of differential games{\textquotedblright} {[Uspekhi} {Mat.} {Nauk} 21 (1966), no.~4(130), 219{\textendash}274; {MR0204187]}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {923--938},
     year = {1983},
     volume = {19},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1983_19_6_a0/}
}