@article{DE_1990_26_11_a10,
     author = {V. I. Korobov and G. M. Sklyar},
     title = {Methods for constructing positional controls, and a feasible maximum principle},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1914--1924},
     publisher = {mathdoc},
     volume = {26},
     number = {11},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1990_26_11_a10/}
}