@article{MMO_1970_22_a4,
     author = {M. M. \v{C}oban},
     title = {Multi-valued mappings and {Borel} sets},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {229--250},
     publisher = {mathdoc},
     volume = {22},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_1970_22_a4/}
}