@article{MAT_1969_13_5_a4,
     author = {David Blackwell},
     title = {Positive dynamic programming},
     journal = {Matematika},
     pages = {103--106},
     publisher = {mathdoc},
     volume = {13},
     number = {5},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAT_1969_13_5_a4/}
}