@article{VMP_2008_9_3_a12,
     author = {I. V. Kolos and M. V. Kolos},
     title = {An approximate analytical solution of a filtration problem},
     journal = {Numerical methods and programming},
     pages = {332--337},
     publisher = {mathdoc},
     volume = {9},
     number = {3},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMP_2008_9_3_a12/}
}