@article{TM_1988_185_a11,
     author = {Yu. S. Ledyaev and E. F. Mishchenko},
     title = {Extremal problems in the theory of differential games},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {147--170},
     publisher = {mathdoc},
     volume = {185},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1988_185_a11/}
}