@article{ZVMMF_1997_37_6_a4,
     author = {A. K. Aǐtzhanova and A. K. Skiba},
     title = {Analysis of the discounting coefficient in a gas-field model},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {691--698},
     publisher = {mathdoc},
     volume = {37},
     number = {6},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1997_37_6_a4/}
}