@article{DAN_1970_193_2_a11,
     author = {A. I. Subbotin},
     title = {Differential games with constraints on the phase states},
     journal = {Doklady Akademii Nauk},
     pages = {294--297},
     year = {1970},
     volume = {193},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_193_2_a11/}
}