@article{SJIM_2006_9_4_a3,
     author = {A. I. Erzin and I. I. Tfkhanov},
     title = {The problem of the search for a~balanced flow},
     journal = {Sibirskij \v{z}urnal industrialʹnoj matematiki},
     pages = {50--63},
     publisher = {mathdoc},
     volume = {9},
     number = {4},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJIM_2006_9_4_a3/}
}