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@article{TM_1972_128_a1, author = {N. N. Krasovskii and A. I. Subbotin}, title = {The saddle point of a positional differential game}, journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova}, pages = {22--33}, publisher = {mathdoc}, volume = {128}, year = {1972}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TM_1972_128_a1/} }
N. N. Krasovskii; A. I. Subbotin. The saddle point of a positional differential game. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Collection of articles. Part II, Tome 128 (1972), pp. 22-33. http://geodesic.mathdoc.fr/item/TM_1972_128_a1/