@article{ZVMMF_1990_30_5_a8,
     author = {G. A. Virnovskii and E. I. Levitan},
     title = {Identification of a two-dimensional model of the flow of a~homogeneous liquid in a~porous medium},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {727--735},
     publisher = {mathdoc},
     volume = {30},
     number = {5},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1990_30_5_a8/}
}