@article{DAN_1979_249_6_a10,
     author = {E. V. Radkevich},
     title = {On an approach to the solution of problems in filtration theory},
     journal = {Doklady Akademii Nauk},
     pages = {1321--1324},
     publisher = {mathdoc},
     volume = {249},
     number = {6},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1979_249_6_a10/}
}