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@article{MAT_1970_14_2_a6, author = {D. Blackwell}, title = {On stationary policies}, journal = {Matematika}, pages = {155--159}, publisher = {mathdoc}, volume = {14}, number = {2}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MAT_1970_14_2_a6/} }
D. Blackwell. On stationary policies. Matematika, Tome 14 (1970) no. 2, pp. 155-159. http://geodesic.mathdoc.fr/item/MAT_1970_14_2_a6/