@article{KYB_1973__9_4_a1,
     author = {Mandl, Petr},
     title = {A connection between controlled {Markov} chains and martingales},
     journal = {Kybernetika},
     pages = {--241},
     publisher = {mathdoc},
     volume = {09},
     number = {4},
     year = {1973},
     mrnumber = {0323427},
     zbl = {0265.60060},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1973__9_4_a1/}
}