@article{TVP_1996_41_4_a12,
     author = {D. O. Kramkov},
     title = {On the closure of a~family of martingale measures and an optional decomposition of supermartingales},
     journal = {Teori\^a vero\^atnostej i ee primeneni\^a},
     pages = {892--896},
     publisher = {mathdoc},
     volume = {41},
     number = {4},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TVP_1996_41_4_a12/}
}