@article{IVM_1983_7_a2,
     author = {A. D. Lyashko and M. M. Karchevskii},
     title = {Difference methods for solving nonlinear problems of filtration theory},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {28--45},
     publisher = {mathdoc},
     number = {7},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1983_7_a2/}
}