@article{DE_1974_10_4_a16,
     author = {T. B. Solomyak},
     title = {Methods of solution of certain filtration problems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {721--729},
     year = {1974},
     volume = {10},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_4_a16/}
}