@article{ZVMMF_1985_25_5_a9,
     author = {M. M. Kovalev and N. N. Pisaruk},
     title = {Independent flows with a discrete-concave expenditure function},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {757--771},
     publisher = {mathdoc},
     volume = {25},
     number = {5},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1985_25_5_a9/}
}