@article{MAT_1968_12_3_a3,
     author = {W. H. Fleming and M. Nisio},
     title = {On the existence of optimal stochastic controls},
     journal = {Matematika},
     pages = {116--133},
     publisher = {mathdoc},
     volume = {12},
     number = {3},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MAT_1968_12_3_a3/}
}