@article{ZVMMF_1982_22_2_a23,
     author = {E. I. Balaban},
     title = {On approximate evaluation of the {Riemann} integral of many-valued mapping},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {472--476},
     publisher = {mathdoc},
     volume = {22},
     number = {2},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1982_22_2_a23/}
}