@article{MM_1991_3_2_a8,
     author = {V. G. Danilov and O. B. Rashkowsky},
     title = {The asymptotic solution of the equation describing the polytropic gas filtration in a~nonhomogeneous porous medium.~2},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {119--134},
     publisher = {mathdoc},
     volume = {3},
     number = {2},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_1991_3_2_a8/}
}